| Re: my new 100 gallon setup. Something to keep in mind in regard to number of bulbs is the width of the endcaps. T5 bulbs use the same size endcap as the VHOs. 6 should do very well for you though. If you're at all worried about not having enough light with 6 bulbs, stagger them a bit and put individual reflectors on them.
I've got 4 48" T5 bulbs on my 90 and until two days ago they were non-reflected. I added two reflectors and the difference is noticeable. A reflector costs about as much as a bulb (maybe a couple bucks more) and you can't go wrong with them.
__________________ 90 gal Mixed Reef |