sup guys, my seedling is starting to get brown spots on the bottom leafs. It is about 1.5 weeks old, in pro-mix soil and under a 45watt cfl and a 23watt cfl.
temps are around 80-90, soil is pure pro-mix no nutes nothing. Out of 3 plants this is the only one to do this and is only doing it on the bottom leaves
nutrient levels too high plant becomes unable to take in nutrients due to salt build ups flush and leave it b4 starting feed again with nutrients mixed at least 50%weaker increasing gradually