Hi everyone, I have a think different in an aerogarden with an air pump and stone,a parabolic reflector and a 600w hps bulb.the seedling is currently at day 12. And my ec meter has given me a reading of 0.61 last night and was 0.62 today. But I noticed one of the leaves was dropping down a bit.where as the other 3 leaves look fine should I be worried about this? Any thoughts would be much appreciated thanks!