yeah i have the light about 20" from the top and the fan is on a timer set to go off every 4 hours for 1/2 an hour
suzuk99 Reviewed by suzuk99 on . HELP FIRST TIME GROWER!! hello guys, ive just started a little ebb and flow set up and i have some questions about some stuff. First of all my system is a 9 plant system. for a growing medium i am using rockwool and expanded clay pelets together. I germinated the seeds in rockwool and then placed the whole cubes in the expanded clay pelets. Ive got a 400 watt mh on them right now on the 18/6 schedule and theyve grown about 4 cm with 4 leaves on them. It has been about 2 weeks since germination. 2 types of leafs in Rating: 5