Wedding Cheesecake Fast Buds Contest

Damn cant seem to catch a break, was advised online that grodan rockwool cubes no longer need to be buffered. They apprently all come neutral. NOT TRUE! Atleast not with mine, had been trying to figure out why all my plants have been getting stunted in rockwool after a couple weeks and why the PH is fluctuating so wildly putting in 5.6PH and getting 8.4 coming out of runoff! Lesson learned, dont just listen to everything online without checking yourself... Now buffering my next rockwool cube over the next couple days but unfortunately most damage is already done so can expect some disappointing harvests but going to keep going with them and see if i can turn them around. Day 10 - watered with 100ml of ph 5.6 Day 11 - transplanted into 4inch rockwool cube (wasnt buffered to 5.6 so has been rising ever since) Will have to correct the ph slowly as it rises, so going to flush each feeding until runoff comes back under ph 6