I've got a 39l DSM tank going with just HC growing in it and have noticed some yellowing of the leaves on it, it was planted on the 1st this month, just wondering... am I exposing it to too much light? Photo period was 10 hours, I've now dropped to 8 hours, or am I misting the tank too much, misting twice a day, have only done it once today, humidity is high, any thoughts on this? Are the plants just adjusting perhaps? Am I better off flooding the tank? This is my first DSM so all thoughts welcome, cheers. Oh, soil is ADA Ammazonia.