This is my rainforest 36 with the 2" holes, 6 per little pie slice first thing I did was slide my clones in with the black clone plugs from my ez-clone 60, they are some kind of styrofoam or something they allowed for stem expansion. They are at 4 weeks in 12s and are doing okay, what do you think, I am consdering getting a co2 burner but i'm not suure if it is worth it at 4 weeks in, I would love some advice on that, i'm useing GH's 3 part flora micro, flora grow and flora bloom and keep my p.h. at 5.7-5.9 with an e.c. of 1.8 to 2.0 and flush every 5 to 7 days, hope to harvest some nice ones with this.