I used 2 of the dual bulb 48" shop lights on my 60 gallon for a total of 160 watts. I have found I get noticeably better growth with 110 watts of cfl.
Not to say the shop lights didnt work, I grew a ton of stuff under them. and I paid $9.99 per unit and $20 for 4 of the 6500K bulbs for them at walmart.
Not to say the shop lights didnt work, I grew a ton of stuff under them. and I paid $9.99 per unit and $20 for 4 of the 6500K bulbs for them at walmart.