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Old 12/19/2017, 09:22 AM   #1201
biecacka
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What size halide do you have giving you 1900 par?

Corey


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Old 12/19/2017, 01:15 PM   #1202
karimwassef
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400W... approx 12" - 18" above the water... but the big factor is the reflector and using dual ended HQI... I used Cayman Sun


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Old 12/19/2017, 02:42 PM   #1203
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Gotcha.
I have the largest lumenarc reflectors. 22/22/9 or so. But run single end 400

Is that 12 inches above water the bottom of the reflector?

Corey


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Old 12/19/2017, 09:29 PM   #1204
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I have a thread with pictures and a PAR map

http://www.reefcentral.com/forums/sh...hlight=par+map

I need to find the post where I describe the setup


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Old 12/19/2017, 09:32 PM   #1205
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Here's the test setup.

http://www.reefcentral.com/forums/sh...hlight=par+map

And

http://www.reefcentral.com/forums/sh...r#post24597045

I got 1900 on a later test with new bulbs - but can't find the record


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Old 12/19/2017, 10:03 PM   #1206
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cool. thanks for the links. i think i will run 2 250 bulbs about 6-8in off the water and go from there.


corey


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Old 12/20/2017, 12:27 PM   #1207
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you can't put MH that close to the water in my experience. The IR radiation will cause a dramatic temperature rise and the water splash will cause salt crusting and require frequent cleaning.

Just my experience... even 12" was difficult to maintain.


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Old 12/24/2017, 07:03 PM   #1208
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So reflector 12 inches off water line at least. Then 24 inches to tank bottom, then height of reflector is 9. So 45 inches from the bottom of my tank?

I will look into that, my current fixture has been 8 inches from reflector to water line for a few years now, but your says I should move it to 12 at least? I will see if I can tinker with that.

Corey


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Old 12/24/2017, 07:21 PM   #1209
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8" is too close IME.


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Old 12/28/2017, 12:32 PM   #1210
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Do you think that I will get enoug par at the bottom of the tank using 250 watt bulbs? If I keep the reflector 12 inches off, then nine more inches to the bulb, so 21 inches from tank top to bulb then another 24 inches to the sand?
Or should I look into the 400 again?

Corey


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Old 12/28/2017, 05:21 PM   #1211
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Just remember that it is not all about par. MH's produce a full spectrum lighting that is impossible with LED's. I have a 180 with acropora all over my tank and am getting great growth and color. I'm using 3 Reef Brite mh/led pendants 13 inches above the top trim... 36 inches from the bottom of the tank.... no problem with growth or color. A standard 180g.


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Current Tank Info: 180g sps dom, 40b sump, Reeflo Dart, Apex, Aquamaxx co2, Reefbrite mh/led pendants w/14k twinarcs, Kore 5th doser, Tunze ATO, Ranco controlling 800 watt Finnex tube, 2 Maxpect Gyre 150XF with Ice Cap Controllers and battery backup, Bean Animal drain
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Old 12/29/2017, 11:31 PM   #1212
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How is it 9" from the reflector to the bulb?


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Old 01/02/2018, 07:43 PM   #1213
biecacka
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i meant from the bottom of my reflector to the top is about 9 inches, so the bulb actually sits about 7 inches from the bottom of the reflector.
I am sure i am overthinking this and in fact have already placed them about 9 inches off the water level.

corey


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Old 01/02/2018, 11:21 PM   #1214
Western_reefer
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Hey everyone, my 250 w galaxy ballast just pooped out after 5 years of use and i currently have no lighting over my tank and i need to buy a new ballast ASAP, seems like most of the good nice brands of MH ballast don't exist anymore.. what's a really good brand of 250 w ballast out there to run a single ended 20K 250w Radium bulb? Seems like the only MH ballast that most stores sell/offer are Reef Brite and Luxcore??? Please help!


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Old 01/03/2018, 01:58 PM   #1215
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hamiltontechnology.com


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Easy does it...

Current Tank Info: 40b. sps, Metal Halide,big skimmer,lots of flow, barebottom, natural seawater.
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Old 01/10/2018, 10:13 PM   #1216
Bronx19
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Just checking in to say I fired up my Infiniti for the first time today with my new Pheonix and coral plus bulbs. What a thing of beauty. The shimmer is stunning, not that fake crap, but like a real piece of ocean. And the colour temp is great, a real crisp blue.


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