Originally Posted by
Culp
http:///forum/post/2989040
i was going to have one fan for ever two bulbs. and im going to have two sets of Ice cap retrofits so 8 bulbs total for my 72" 125 gallon tank and maybe a year down the road ill add another set of retrofits to give me 12 bulbs.
You know they have 60" T5 retrofit kits?
Much better choice for a 125. Do a search for reefgeek and give them a call. Use their brand reflectors which are 2 1/2 inches wide allowing you to have 6 lamps over the tank.
The local reef club measured PAR at the sandbed of a 24" tall tank with a 6 x 80 watt (60" lamps) and got PAR in the 340's. That is enough for anything you want to grow including clams.