Dont be fooled by the normal way of thinking here..... More is NOT better when growing.... Its all about light and conditions.... If you put 4 plants under a thousand.... you may get 3-4 off each one.... If you put 2 under it, you will get like 6-8 off of each one, if you put one under there, youd probably get 14-16 off the one.... its all pretty much the same... Do yourself a favor and minimize confusion, labor, and waste of nutrients..... Go with less, and you will crop just as big.... Theres no point of stuffing 6 under a 1000 and only getting so much light on each one, having to move them to water them etc.... Less is more... TRUST ME... I just did 3 Caseys under a one thousand, and one casey under a one thousand..... The 3 gave me 5 zips each.... 15 total... The one gave me 17 zips.... You figure it out...