Quote:
Originally Posted by whatcaneyedo
His tank is only 18" deep so I think 150W would probably be fine.
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It does DEPEND on what you want to grow. I have found the 150w MH to be slightly inferior to a 4 bulb HO T5 fixture. As per Grizzes inquiry of either wanting a T5 or MH if considering a MH go with the 250W,(150's are hard to sell when you will inevitably upgrade in the future) 6 or 8 bulb HO T5 would suffice.
Kevin