Try to measure your water everytime. If its too high use ph down soluble packet. try 5.5 ph to 6. 5.8 is primetime. Or 6. Its all in how the plants respond. make shure the temp of the water is 75. not cold and not hot. your going to be flushing next. Thats fun...like a dentist. theres a process online at erowid probably.