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hi, this is my first time growing, i have a dwc system but i have a mold problem with my (hopefully) ladies. i have a couple pics, my question is if i cut off the top parts of rockwool and change my hydrotons, will it work for it? edit : wrong section i guess, can someone move it to hydroponics...

hi, i have a question about temperature. i made up a new DWC hydroponic system, and i plugged in 400w HPS lamb. but temperature is about 50 calciuson the plants, how does it effect the plants? u can check the pic