happy frog. Mainly r/o water. about 6 weeks into veg from clone... sativa dom strains. sour diesle, casey jones. 400 w mh. in a 8x8 dark room. in 2 gallon maybe 3 glln square pots. i have some rhizotonic, cannazyme, pureblend pro grow, cal mag, liquid karma. i have been sticking with mainly R/o water late watering 1 time per 24/48 hours. trying to keep the medium thoroughly moist without letting it get too dry or wet. platns are above knee hieght almost waist height. the leaves are showing lack of K. but i think it might be caused by cal or mag deficiency. i dont want to start dumping chemicals if nothing is wrong and more just need be applyd.