4ft light 6ft tank

[corpusse]

Originally Posted by SeaHorse_Fanatic

Nope. Did that when we got our first 6' reef tank & it was BAD. Nowhere near enough spread or light for the 6' length. Don't waste your money. Just save up to get a proper 6' light. In general, each MH will do a 2' spread.

Anthony

I would say it depends.

If you had a 10x54w T5 you could hang them high enough to give you enough spread.

It also depends what kind of tank you want. Jam packed with SPS, a mixed reef, softies ect.

I run 6x54w over my 5 foot tank. I have no problems with a clam on the bottom or sps, and I also have shaded areas on the sides for other corals. Personally I like a bit of uneven light vs the perfectly lit tanks we often see, but again it depends what your goals are.