my plants are in 5 gal. and im also a medical grower for two patients and the local club. my ferts are 5:5:5 down to earth all purpouse blend (water based) which im using at half strength since most use 10:10:10 at quarter strength. i did so much things in my grow room this last week its hard to tell whats up. do you think i will need secondary nutes or are the primary NPK enough? i started oct 1st i think the same day as you. my plants were at 18" but i had to tie them down last week because i was going to lose product from them being so tall. are yours clones or seeds? if seeds your plants will double in hieght when you flower. so your plants will be like 4'. I need to flip mine ASAP (once i can by HPS bulbs). i reccomend you do the same. that would be cool if we harvested together. do you have a log? if so link it to me!