Yeah it'll screw up my perpetual harvest...3 strains in 3 4x4 scrog area of an 8x8 tent. I'll prolly do this in Feb or Mar...the other strains will be much shorter...might harvest and bring in 2 replacement strains to take their places. I can run Space Dawg, GrapeGod, Chernobyl, and possibly Alaskan Ice if I can get a bud in another country to two step it to me. I have 2 600w MH and 2 600w HPS bulbs...I'll likely add a 3rd with an XXXL reflector...the other 2 are Yield Master II Supremes. There is also a 13K BTU in the other 4x4 area of the larger tent. Oh, I also have 2 250w CFL with reflectors. It's coming along.