El your starving them. I just looked up the feeding schedule from GH and Floranova at this time should be 7.5ml per gal, roughly 1 1/2 tsp per gal. You are getting yellow because they are crying for Nitrogen. http://www.genhydro.com/genhydro_US/...ainToWaste.pdf There is the link to feeding schedule :thumbsup:
Calmag is still a good idea even if you dont have a problem. The label of the GH version says 5ml per gal (1 tsp) but I am running it as a preventer at a little less than half that.
tinytoon Reviewed by tinytoon on . Newbie needs help This is my first grow I am 3 days into my 3rd week of growing, I am using DWC a double outlet air pump a six inch bouble stone in each, in a closet 3ftX5ft, two plants each in a 5gallon bucket with net pot built into the lid, a fan blowing. I am using Flora Nova, I am usign 3 gallons of water per bucket with 1tsp of nutes in each bucket, water out of the faucet ppm is 0.30 after I add the nutes it goes to 0.70, I am using 4 T5 bulbs 4ft long, I use the color scale with drops to test my ph, Rating: 5