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Old 02/16/2018, 09:07 PM   #1
Andrew D
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Doser help - calling on all who dose alkalinity...

Hi everyone, hoping to get some perspectives on how I can overcome a problem with my alkalinity dosing. Specifically, the 1/4 inch tubing that I use constantly gets plugged at the end, which creates back pressure which eventually causes the tube to pop out at the doser end and dump a whole lot of alkalinity solution onto the floor. This happens regardless of whether the end of the tube is in or above the water. I clean it frequently but there are times when life gets in the way and before I know it it's popped out again. Yesterday I discovered that there were blockages within the tube itself that I couldn't clear so I ended up replacing the tube altogether. It's messy, costly and results in alkalinity swings that are stressing out my sps, and I'm hoping to learn from others out there because I'm sure I'm not the only one that this is happening to. The only things I can think of that I've not already tried are expanding the size of the tube (which will require a reducer fitting of some kind at the doser itself) or diluting the solution and dosing more frequently and heavier.

For context, I use b-ionic 2-part solution which I mix as recommended by the manufacturer, have a kamoer 3 channel doser, and dose 20mL twelve times a day.

Thanks in advance. Andrew


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Old 02/17/2018, 01:53 AM   #2
Dugless
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Do you use vinyl or silicone tubing? Iíve found the silicone to be more pliable and resists hardening that can create some blockages.


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Old 02/17/2018, 06:19 AM   #3
Pet Detective
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Can you secure the end that pops off with a plastic zip tie?


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Old 02/17/2018, 06:36 AM   #4
2una
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Quote:
Originally Posted by Andrew D View Post
It's messy, costly and results in alkalinity swings that are stressing out my sps,
Your telling yourself already - Calcium reactor time
Think the kamoers are max 12x/day so not like you can do smaller amounts more frequent either.
If you have an apex on the tank a DOS unit would dose 2ml every 12min (for your 240ml) They're not silent like the kamoer tho.



Last edited by 2una; 02/17/2018 at 06:45 AM.
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Old 02/17/2018, 09:55 AM   #5
Joe0813
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Ive never had this problem with my Neptune hoses. maybe turn it on so it doses smaller amounts quicker so it doesn't have time to dry


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Old 02/17/2018, 01:09 PM   #6
Andrew D
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Thanks everyone. To answer your questions, I use the flexible clear vinyl tubing not the more rigid opaque stuff. Not sure what silicon tubing looks like but I've not found anything more flexible. As for fixing the end so it doesn't pop, I don't think I can use a zip tie but I have thought about using tape, maybe the electrical stuff that is quite strong. You're right that the kamoer only doses 12 times max per day so I can't go more frequent. I don't have an apex but have been thinking about it and this is additional incentive for sure. As for a calcium reactor, I had bad experiences in the past trying to tune it but the reactor I had wasn't the best and very likely undersized for my tank too, I may have to try it again but it's a lot of money to shell out.

Curious, does anyone have any experience or opinion about diluting the solution say and increasing the amount you dose?


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Old 02/17/2018, 02:42 PM   #7
2una
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I don't really like this idea but it might be a solution to try if you have a spare pumphead not being used on the unit.
Add a "t" by the doser to the alk delivery line & have 2 heads feed more often.
eg pump 1 - 10ml x 12 & pump 2- 10ml x 12 ,offset times so liquid is going thru an hour apart instead of the 2 it is now.
Would maybe need non returns put on the feed side of the "t" to stop it trying to go the wrong way.
Extra trouble waiting to happen probably but it might be a solution


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Old 02/17/2018, 08:14 PM   #8
ajoe
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Quote:
Originally Posted by Joe0813 View Post
Ive never had this problem with my Neptune hoses. maybe turn it on so it doses smaller amounts quicker so it doesn't have time to dry
plus one on this. faster/shorter dose will likely reduce and/or displace any deposits.


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Old 02/17/2018, 09:32 PM   #9
Kevin Guthrie
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Run the tubing so it ends underwater and doesn't fill with air when the dosing pump turns off.


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