well friend, im not a super-experianced grower, but i believe you can get 2 whooring 42-45 watters in each lamp like that if you buy a few y'splitters. i recommend canadian tire or lowes i guess if your american because ive read they have hi-output (always get hi output) spiral CFLs with like 2200-3000 lumens each, they are hard to find ones that have more than 4100k but i know there are 6400ks out there, somewhere, maybe let me know if you find them!