im useing the r/o water cause ive had this same problem every time i try a small grow, i thought mabye i wasent checking the ph properly, so i know the r/o water is ph balanced.. thought id give it a try

i do wait (mabye sometimes too long) for the pots to get fairly dry before i water

i did transplant 4 of them yesterday to see if it would make a difference,

again thanks for the help ill take pics now and later of the ones i transplanted cause i know there is alot of different views on this subject (transplanting during flowering)