Growing in 6" rockwool, 6 weeks into flower in flood and drain. Every day I check pH in rockwool and it is around 5 (pH pen broke, so using drops). I up rez to about 6.5-7 to try and raise pH in rockwool each day. After flood rez is 6 and rockwool is 5.5-6, but the next day it's low in the rockwool again. Any ideas?
TIA,
RedEye
RedEye69 Reviewed by RedEye69 on . Please Help-pH in rockwool too low Growing in 6" rockwool, 6 weeks into flower in flood and drain. Every day I check pH in rockwool and it is around 5 (pH pen broke, so using drops). I up rez to about 6.5-7 to try and raise pH in rockwool each day. After flood rez is 6 and rockwool is 5.5-6, but the next day it's low in the rockwool again. Any ideas? TIA, RedEye Rating: 5