Green gelato auto

Hey all! This is the First time iam growing and iam very excited about it! I proved it by overwatering this week:( it might be that overwatering is the reason for one plant to turn a bit more yellow.. also 1 plant seems overheated. Anny ideas? I also used normal water instead of pH 6.6 Defently going to adjust it next time I use seeding and cutting soil but have no good Idea when i should pot them. I know its bad to do so but i had to. I made my own soil with badguano from plagron and a lightmix with a bit of coco's but the description of the amount of badguano are brutal overkill.. ground EC was 4 to 5 while run off water was 16 so had to flush it many Times.. the ground seems fine at the moment