The last few feeds to runoff I’ve given 5.5PH in and get consistently 6.3-6.5 out when measuring the runoff. I think this is causing a bit of nute lock out too causing deficiencies. I normally feed about 2-3 days, when the coco is dry to the first knuckle but after noticing the high PH of the last feed, the last 3 days I’ve watered 1L of plain 5.5PH water with no runoff to try to lower the root zone PH. Today I fed 2L of 5.5PH’d nutes and measured the runoff at 6.4. What can I do to combat this high PH?
Coco/Perlite @ 60/40
3gal fabric pots
Amnesia Haze Auto & Blueberry Auto - both in week 1 of bloom