What bulbs over a 18" deep tank

[kevensquint]

Trying to see what others are using with regards to wattage and color temp. specifically. I have tried many combos all in 250 watts, and the one thing that I have noticed is I always get some corals that do great and some..not so great. It has even crossed my mind that 2x250's over an 18" deep tank is too much.

 

[jjjimmy]

On a 18" deep tank you could easily get away with 175's and save yourself on your electric bill.

 

[bskiba]

reflector can make a big difference also. I would stick with the 2 -250's and go with good reflectors

 

[Cody Ray]

I have 150W DE over my 29 and it punches right to the bottom no problem.

 

[drnkjunglist]

150's would be fine, i think they reccomend 250w's for 24" - 36" deep

 

[mr pink floyd]

24" and under is 150DE or 175 will work

im going to put a 150 DE on my 29

 

[cee]

I have 400 watters over my 17" deep tank w/ Lumenarcs and love it. But then again I'm cheap and run M59 ballasts...

Dave

 

[kevensquint]

Commiphora, do ALL your corals like so much light? in my situation I find certain corals grow well and others change color and do nothing. Things improved when I shortened the photoperiod from 10 hrs/day to 8hrs.

 

[PL-Reef]

250w. IMO

 

[undertai]

I run 2 175's over my my 55 gal. tank and I get good grow even with corals on the sand.

 

[Large Polyp Dave]

i'm setting up a 18" tall tank

and i'm using T5's on it.

I think T5's would be an excellent choice on such a short tank