I just put 4X96 PC
( for $225 thx ebay) lights on my 65 gal
. After reading up I might have gone for MH
as my tank is 24" deep and I have read that PC
lose a bit much after 18". I have a 4" DSB
so I'm close.
I have also read alot about the cooling problem with MH
. Last you want is to have to buy a chiller IMO
. Fans help alot too. Some retrofit kits leave some room. Maybe you could start with a couple Floresents spaced apart with room in the middle for MH
down the line when you need them and switch the floresents to Actinic. You could do this when you would replace the bulbs so the ones you get don't go to waste.