Growing WW in 5" x 5" fence post cut and drilled for I guess what you would call NFT, it has 3/8 tubing inside drilled to spray 2 streams of nutrients to each 4" basket. It has a 12 gal reservoir w/ a 350 gph pump that takes care of 2 of these 5' long NFT channels. Each channel has 5 4" baskets 1 foot apart for a total of 10 per table. and using peat nuggets to start clones and hydroton to install into baskets.
I was using advance nutrients connoisseur a&b light to moderate feeding but changed to the new recipe which is connoisseur Grand master schedule ( but just changed that 4Days ago)
Ladies are in week 5/6 of bloom.
Resi gets changed every week, or sooner if I feel its necessary, and each basket is flushed with a 1/3 NPK mix with Hygrozyme added, all mixed with RO filtered water.
Ph usually does not go past 1 hr without being checked and corrected. kept @ 5.6
Ph is one concern 1 day after water changes it begins to fall faster and faster, that's right i said fall. I use so much ph up it is scary sometimes.
I do have root rot now and have had it before, but this time the roots were ok @ 1st week of bloom then the roots seemed to get immediately much worse when advance nutes humic acid (H2) was added, this turned them instantly and permanently brown. These additives were removed by the manufacturer from connoisseurs schedule (H2-F1).
Light inside the channels was an issue up until a week ago now they are light tight.
leaves show signs of potassium deficiencies,yellowing on the edges and tips
Growth seems to have slowed or stopped.
I have a table 2 weeks behind that one in the same room and starting to show signs of potassium deficiencies and Ph diving. and roots are turning tan as well.
is there a way to stabilize the Ph and save my crop or is it doomed?