ATI Powermodule Height Above Water?

[SkullV]

In a 21" deep tank can the ATI Powermodule be hung 6" above the water or will everything bleach out?

[SkullV]

Also, what are your thoughts on going with the 8x54w Dimmable Sunpower over the 8x54w Powermodule?

[karsseboom]

I would get the sunpower. From what I have seen the powermodule is not worth the extra cash and it hardly makes a difference in par. I might buy that same fixture not sure on what bulb combo but looks like the best colors are with the ati fixture.

[jimrawr]

My tank is 24" deep and my 6x25w sunpower bleached everything when it was only 6" above the water.

As far as dimmable, I hear they reduce the life on the bulbs.

[kellerexpress]

You definitely need to hang it higher or you will bleach. The dimable sunpower would be a better option imo.

[solitude127]

I have a 20" tall tank and I have my PM at 8" above my tank.

[Crush Coral]

I have a 75 which I think is 21", My 4X54 PM is 4" above the tank, but it only has 4 bulbs. Only had 1 Acan bleach, put it in shade and slowly moved it out, now OK.

[aqua80]

depends on how many bulbs vs width of the tank and also what bulb combo...
everything is possible !

[NewBostonConst]

I have a 10 bulb power module that is 2 inches off the water on a 20 inch deep tank. Most corals are 6 inches under water. I have great growth and only have moved a couple coral lower for better color. I haven't killed anything and have at least 30 different sps.

I also thing it depends on what bulbs you run. Some bulbs can put out almost twice the par of some others.

[SkullV]

Well I got a 6 bulb sunpower for an incredible price so I went with that. All of the coral is getting sold this week anyway so it should be perfect.