Reef Central Online Community

Home Forum Here you can view your subscribed threads, work with private messages and edit your profile and preferences View New Posts View Today's Posts

Find other members Frequently Asked Questions Search Reefkeeping ...an online magazine for marine aquarists Support our sponsors and mention Reef Central

Go Back   Reef Central Online Community > Coral Forums > Non-Photosynthetic Corals
Register Blogs FAQ Calendar Mark Forums Read

Notices

User Tag List

Reply
Thread Tools
Old 04/11/2012, 11:21 PM   #251
herring_fish
Crazy Designer
 
herring_fish's Avatar
 
Join Date: Mar 2008
Location: Winston-Salem NC, USA
Posts: 1,019
Quote:
Originally Posted by herring_fish View Post
Has anyone actually run into this problem?

My intent is to simply have a bigger peristaltic pump for the water rinse than for the food. I don't know for sure that this will work. I have just assumed that it would. Please give me your thoughts on this. Perhaps I have over looked something.
We have been talking about back flow valves, venturi valves, hydrogen sulfide and refrigerators. Before we move on, I would like to know if anyone has actually had this back flow problem that is so bad that it breaks the tubing in the peristaltic pumps.

Again, I don’t know because I haven’t tested this plan but no one has answered back with experience on this that speaks to the contrary. Failing that, I would like to hear the logic that others may have surrounding this plan.



The water pump can be outside the fridge and the food pumps would be inside, very close to the food containers. Food would be flushed at lease every 3 ours.

I would think that if I pump competitively clean tank water into a bigger diameter tube …water will not run back up a smaller tubes that are full of thick phyto concentrate. I think that it will simply go in the path of least resistance.

Guys and Gals, do you see problems with this?


herring_fish is offline   Reply With Quote
Old 04/14/2012, 12:52 PM   #252
herring_fish
Crazy Designer
 
herring_fish's Avatar
 
Join Date: Mar 2008
Location: Winston-Salem NC, USA
Posts: 1,019

Last night, I was on another thread and saw this, re-posted from still another thread that I had seen before.This was on of my inspirations. I don't want the main collector/through, tube to be as big as in the picture because I am afraid that there won't be enough water motion to flush out the thick food but this is the idea. The system about has been working well for quite a while.

reefervet suggests that you use a venturi and he is one of the best NPS guys out there. I think that he has it on his return line so there should be more flow than what I want to do. I don't know what would happen in a lower flow injection. Also, if you use three or four foods, do you need three of four venturi.

Quote:
This fridge is the Avanti SHP1701B 1.7 cubic foot refrigerator. The system has been proven to consistently hold temperature at 38 degrees with the refrigerator having the pass through pipe holes through it.
Different quote:
Quote:
Also what it the temp reading inside the refrigerator? Might also recommend keeping a thermometer inside the unit as well, check it every so often daily, to see how stable the temperature stays in the main area the food is being dosed from. Main area should be around 38 degrees. Monitor the area where the peristaltic dosing pump is to make sure it doesnt freeze up.
I bought a Haier HBCN02EBB 1-4/5-Cubic-Foot 42-Can Flat-Black Glass Front Beverage Center and as I said, I plan to change the thermostat.





Last edited by herring_fish; 04/14/2012 at 01:26 PM.
herring_fish is offline   Reply With Quote
Old 04/17/2012, 05:15 PM   #253
aussiedan
Registered Member
 
Join Date: Apr 2012
Location: Brisbane, Australia
Posts: 27
for the fridge plumbing, i can see all the connectors and john guest fittings but are you using actual john guest tubing or is it just the more rigid walled airline tubing?

I've got some JG elbows lying around and when I use the rigid airline tube it fits however if I use excessive force it will slowly slip out of the fitting where as with the JG tubing it is rock solid. I am hoping to use the airline as it is clear so I can see how the lines are doing.


aussiedan is offline   Reply With Quote
Old 04/17/2012, 05:33 PM   #254
slapshot
Registered Member
 
slapshot's Avatar
 
Join Date: Jan 2004
Location: Farmington Hills, Michigan
Posts: 1,800
I use the tubing you can buy for R/O filters. It's a little thicker and more ridged then the 1/4 inch tubing we use for air lines.


slapshot is offline   Reply With Quote
Old 04/22/2012, 12:38 AM   #255
aussiedan
Registered Member
 
Join Date: Apr 2012
Location: Brisbane, Australia
Posts: 27
I am after some advice about the Venturi system, I have hooked mine up (see photo) which is tee'd from the 3000lt/hr return pump however I can't seem to get any suction through it and rather is seems to slowly drip from the intake line I have tried to have a look at it and it seems to have a spring loaded seat or something in the actual venturi which may not be sealing correctly causing the leak??? Any advice would be much appreciated.




aussiedan is offline   Reply With Quote
Old 04/22/2012, 10:06 AM   #256
slapshot
Registered Member
 
slapshot's Avatar
 
Join Date: Jan 2004
Location: Farmington Hills, Michigan
Posts: 1,800
Assuming you put it in the right diection, it needs more flow then.


slapshot is offline   Reply With Quote
Old 04/22/2012, 01:11 PM   #257
Wave Ace
Registered Member
 
Join Date: Jun 2006
Location: Swindon UK
Posts: 38
Quote:
Originally Posted by aussiedan View Post
I am after some advice about the Venturi system, I have hooked mine up (see photo) which is tee'd from the 3000lt/hr return pump however I can't seem to get any suction through it and rather is seems to slowly drip from the intake line I have tried to have a look at it and it seems to have a spring loaded seat or something in the actual venturi which may not be sealing correctly causing the leak??? Any advice would be much appreciated.


Its a non return valve in the intake it could be stuck just jive it a push if it moved in then its OK if that dont work you may need more flow


Wave Ace is offline   Reply With Quote
Old 04/22/2012, 04:24 PM   #258
aussiedan
Registered Member
 
Join Date: Apr 2012
Location: Brisbane, Australia
Posts: 27
Thanks for the replies. The Non return valve does move and bounces back but a very slow amount of water still drips through it when it is in the closed position..

What sort of flow rates are required, had trouble finding this data? With the 3000lt pump and all its flow directed through the venturi it is just under 800gph which i thought would be enough


aussiedan is offline   Reply With Quote
Old 04/23/2012, 01:27 AM   #259
Wave Ace
Registered Member
 
Join Date: Jun 2006
Location: Swindon UK
Posts: 38
what size venturi is it ?

what size pipe and length have you got to / from it

you can work out the flow rate you have by timing how quickly the outlet fills a 1litre jug


Wave Ace is offline   Reply With Quote
Old 04/23/2012, 02:18 AM   #260
aussiedan
Registered Member
 
Join Date: Apr 2012
Location: Brisbane, Australia
Posts: 27
http://www.spaparts.com.au/products/...22-Barbed.html

this is the part I have, unfortunately I do have about 60 - 80cm of line each side of the venturi just due to the location of the fridge. I plumbed both lines into the return line for the tank so it isn't so easy to do the jug experiment but I think I might have to pull it all apart anyway by the looks of it The tubing is 19mm ribbed (smooth on inside walls).


aussiedan is offline   Reply With Quote
Old 04/23/2012, 09:07 AM   #261
Wave Ace
Registered Member
 
Join Date: Jun 2006
Location: Swindon UK
Posts: 38
Quote:
Originally Posted by aussiedan View Post
I plumbed both lines into the return line for the tank

this may be where the problem is


Wave Ace is offline   Reply With Quote
Old 04/23/2012, 04:08 PM   #262
aussiedan
Registered Member
 
Join Date: Apr 2012
Location: Brisbane, Australia
Posts: 27
ok so do you think there is to much pressure on the pipe trying to push the water back into the return line through a Tee? How would I then get the food into the tank without pushing the food through the return pump or taking a tube up and over the tanks bracing??


aussiedan is offline   Reply With Quote
Old 04/23/2012, 04:25 PM   #263
slapshot
Registered Member
 
slapshot's Avatar
 
Join Date: Jan 2004
Location: Farmington Hills, Michigan
Posts: 1,800
It difficult, I don't know maybe impossible. Most I believe plum the output of the feeder line right to the tank. I mix mine because it's in the basement but I use a complicated combination of 1/4 inch back flow preventers. I run the risk of it blowing out and spraying water all over but my filter is in an unfinished section of the basement with a drain so no harm no foul. I would plumb it to the display if you don't have a long way to go. Another thing you could try is to insert the feeding line back into the main line with a Y connector not a T. That is what I did. I think the angled side has less back pressure.


slapshot is offline   Reply With Quote
Old 05/09/2012, 01:59 PM   #264
nicewicz
Registered Member
 
nicewicz's Avatar
 
Join Date: Feb 2011
Posts: 39
I'm looking for a bit of advice for a compact automatic feeder for a small aquarium. I plan to house a dosing pump in a refrigerator, but don't have the room to plumb the return flow through the refrigerator. I realize that if I simply have a line going from the dosing pump to the aquarium, that food will remain in the line between the refrigerator and spoil.

Here's my proposal, it's a bit naive, but I'm looking for a simple solution. What if one of the lines on the dosing pump simply follows up dosing of food with dosing of RO/DI water; just enough to purge the line? Yes, you're adding some volume of freshwater to the system, but no more than an ATO system would. That way you'd just need a food line from the refrigerator directly to the tank. Of course you'd sacrifice one of the dosing pump lines, but that is a price I'm willing to pay for a streamlined system. Please let me know your thoughts on the feasibility of this proposed system.


nicewicz is offline   Reply With Quote
Old 05/09/2012, 02:05 PM   #265
slapshot
Registered Member
 
slapshot's Avatar
 
Join Date: Jan 2004
Location: Farmington Hills, Michigan
Posts: 1,800
Quote:
Originally Posted by nicewicz View Post
I'm looking for a bit of advice for a compact automatic feeder for a small aquarium. I plan to house a dosing pump in a refrigerator, but don't have the room to plumb the return flow through the refrigerator. I realize that if I simply have a line going from the dosing pump to the aquarium, that food will remain in the line between the refrigerator and spoil.

Here's my proposal, it's a bit naive, but I'm looking for a simple solution. What if one of the lines on the dosing pump simply follows up dosing of food with dosing of RO/DI water; just enough to purge the line? Yes, you're adding some volume of freshwater to the system, but no more than an ATO system would. That way you'd just need a food line from the refrigerator directly to the tank. Of course you'd sacrifice one of the dosing pump lines, but that is a price I'm willing to pay for a streamlined system. Please let me know your thoughts on the feasibility of this proposed system.
My original system just fed it to the tank. I did two things to mimimized the spoilage. First, I kept the distance between the fridge and the tank small. Second I just fed less more often. I really never had an issue. Moving R/O water through the system will not solve the problem. Food bulids up on the wall of the tubing and in the pump. That will contaminate the water causing the same problem.


slapshot is offline   Reply With Quote
Old 05/09/2012, 03:02 PM   #266
nicewicz
Registered Member
 
nicewicz's Avatar
 
Join Date: Feb 2011
Posts: 39
Quote:
Originally Posted by slapshot View Post
My original system just fed it to the tank. I did two things to mimimized the spoilage. First, I kept the distance between the fridge and the tank small. Second I just fed less more often. I really never had an issue. Moving R/O water through the system will not solve the problem. Food bulids up on the wall of the tubing and in the pump. That will contaminate the water causing the same problem.
OK, good to hear. Yes, I plan to have a very short line directly to the tank and just do multiple very small feedings. Thanks for the advice.


nicewicz is offline   Reply With Quote
Old 05/09/2012, 03:08 PM   #267
nicewicz
Registered Member
 
nicewicz's Avatar
 
Join Date: Feb 2011
Posts: 39
One more naive question: I assume that you have to drill holes in the refrigerator for the return line and the electrical cords?


nicewicz is offline   Reply With Quote
Old 05/09/2012, 04:56 PM   #268
herring_fish
Crazy Designer
 
herring_fish's Avatar
 
Join Date: Mar 2008
Location: Winston-Salem NC, USA
Posts: 1,019
Wall Clogging



I didn't think that a venturi would work for my set-up because peristaltic pump output is too low. I want the dosing pump for the main pump just as it is because I am metering out the amount of water that comes from the main tank and goes into multiple plankton cultures.

I talked to Bulk Reef Supply and they thought that my idea world work but they really had no idea for sure. I was going to go ahead as planned to test it but this wall clogging issue sounds like something that this design might fall victim to.

Then I thought about those drippers that are used for intravenous medication.



Perhaps I could build something that worked like that but just a little different size. Would this be a lot of trouble that would not get the results that I want either?


herring_fish is offline   Reply With Quote
Old 05/10/2012, 12:01 PM   #269
Wave Ace
Registered Member
 
Join Date: Jun 2006
Location: Swindon UK
Posts: 38
Just drilled my fridge and went through the electric wires to the thermostat LOL
the route that it taken was not the way you would have done it

any way I have by passed the thermostat and will be controlling it with my aquatronica instead just got to extend the cable on the sensor for that now


Wave Ace is offline   Reply With Quote
Old 05/12/2012, 09:06 AM   #270
nicewicz
Registered Member
 
nicewicz's Avatar
 
Join Date: Feb 2011
Posts: 39
Quote:
Originally Posted by Wave Ace View Post
Just drilled my fridge and went through the electric wires to the thermostat LOL
the route that it taken was not the way you would have done it

any way I have by passed the thermostat and will be controlling it with my aquatronica instead just got to extend the cable on the sensor for that now
So is it truly luck that you drill in the correct location, or is there a way to determine where to drill the fridge so that you don't destroy wires?


nicewicz is offline   Reply With Quote
Old 05/25/2012, 01:45 PM   #271
Wave Ace
Registered Member
 
Join Date: Jun 2006
Location: Swindon UK
Posts: 38
Quote:
Originally Posted by nicewicz View Post
So is it truly luck that you drill in the correct location, or is there a way to determine where to drill the fridge so that you don't destroy wires?
the cable went into the fridge about 4" up and on the right (looking from the front) and the thermostat is near the top of the fridge again on the right

so one would think the cable would take the quickest route NOT as I drilled below by 1.5" (top of hole) and there was the cable


Wave Ace is offline   Reply With Quote
Old 06/30/2012, 08:34 AM   #272
Wave Ace
Registered Member
 
Join Date: Jun 2006
Location: Swindon UK
Posts: 38
A little vid of my fridge

http://www.youtube.com/watch?v=hyTKayhCoAE


Wave Ace is offline   Reply With Quote
Old 11/25/2012, 12:35 AM   #273
lil urchin
Registered Member
 
lil urchin's Avatar
 
Join Date: Aug 2012
Posts: 56
Quote:
Originally Posted by uhuru View Post
Will do! I think figuring out the correct amount of food to dose with the kalk reactor is the key now. Here is a pic I just took of my dendro:

wow. i want one!
thanks for this posting. i was looking for automatic feeders for wet food like rotirich, and could only find ones for dry foods.
do you have sponges in your tank? i'm wondering how they'd enjoy the frequent feedings like your corals


lil urchin is offline   Reply With Quote
Old 01/14/2013, 01:38 AM   #274
SantaMonica
Registered Member
 
Join Date: Feb 2007
Location: Santa Monica, California, USA
Posts: 2,479
My newest version of a feeder is still to use a wine cooler on top of the tank with a dosing pump next to it, but now I'm mixing up powdered foods with water:

20 ml dry copepods
10 ml dry rotifers
10 ml dry phyto (spirulina)
10 ml dry arcti pods
1/2 teaspoon sodium alginate
16 oz water

I blend it up and put it in a fridge overnight, and the next day it is thick and I blend it again. Then I put it in the wine cooler where it sits with an open top for about a month until it runs out. I'm currently feeding 36 ml a day, down from 72 ml a day.


__________________
Inventor of the easy-to-DIY upflow scrubber, and also the waterfall scrubber that everyone loves to build:
http://www.reefcentral.com/forums/showthread.php?t=1424843
SantaMonica is offline   Reply With Quote
Old 01/14/2013, 06:39 AM   #275
Lavoisier
Premium Member
 
Lavoisier's Avatar
 
Join Date: Aug 2011
Location: Overland Park, KS
Posts: 1,030
Any pictures? Sounds like an interesting idea.


__________________
"...for it is not necessary that these hypotheses should be true, or even probably; but it is enough if they provide a calculus which fits the observations..."--Introduction (attributed to Andrew Osiander) to On the Revolutions of the Heavenly Sphere by Nicolaus Copernicus.

Current Tank Info: 600g DT, 140g sump, 200g Cryptic, 90g Refugium, 3-400w MH, 2 Reeflo Barracudas, and 3 MP60s
Lavoisier is online now   Reply With Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


All times are GMT -6. The time now is 01:43 PM.


TapaTalk Enabled

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2018 Axivo Inc.
Use of this web site is subject to the terms and conditions described in the user agreement.
Reef CentralTM Reef Central, LLC. Copyright ©1999-2014
User Alert System provided by Advanced User Tagging v3.3.0 (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.