Dude. You gotta tell us what you are working with for us to know what might be wrong. detail your setup. Pictures will help too. Right now it looks like you have tiny plants, HUGE pots, not enough water, no light, and a big open room.first 2 week was very hot about 37 degrees but now I put air-condition and the temperature is good. But they still not grow. But the temperature of the water its hot is this a problem.
Yes I use nutr. I put N
Yeah you should water with room temp water which should be 75f. Also those tubes only water a tiny area of the soil.first 2 week was very hot about 37 degrees but now I put air-condition and the temperature is good. But they still not grow. But the temperature of the water its hot is this a problem.
Yes I use nutr. I put N
Vouch. This ^restart your grow, learn more dude. read all the information