going to be sexing as well as growing around 20 seedlings for about 4 weeks before putting out into green house.. i currently have a 75 watt 24" flouroscent tube light, is that enuff light for 20 seedlings? or should i get another 75 watt tube? also how close should i place the light to the seedlings forthe first few weeks? i was thinking like withing like 4 or 5 inches at all times depending on how tall the plants get??