[jft]

Ideas for tank size 72x18x 22 h or 72 x24x20h not halides medium lite to low lite tank

 

[lauraleellbp]

Welcome to TPT!

If you want to stay low/moderate light, I'd put 2 parallel rows of T5HOs running the length of the tank. Doesn't matter how many bulbs you put in each row (you could do combos of several different lengths).

 

[jft]

Thanks what combos would you recommend?

 

[lauraleellbp]

I'd look around and price fixtures out... a suspended fixture is usually ideal, since you can raise & lower the fixtures to adjust the lighting levels in the tank through distance. But if you've got a canopy already with the tank and you want to use that, then you'll need to look for retrofit kits that will work inside your canopy.

Personally, I like the Solar T5HOs from www.CatalinaAquarium.com.