Metalarc Lemon
Active Member
I'm starting to have an issue with the ph dropping in one of my res. I usually run steady at 5.7 but recently when lights come on in the morning and I do my morning rounds the ph in one of the res is dropping to 5.1 to 5.3 . I flushed with plain ph'd water 2 days ago for a few hours and the ph stayed right at 5.7 and didn't fluctuate. So I drained that water filled back up and added a lighter nute dose than usual (around 750ppm usually around 1400ppm this late in flower). The nutes I run are the botanicare pb bloom, sweet, karma, and now in the later weeks FF Cha Ching also. The roots all seem to fine, at least the ones I can see as I cannot pull out the bigger plants this late as all the roots grow together and around the internal plumbing inside the tubes and they don't budge unless you want to rip up a bunch of roots, but the tons that grow right into the res from the drains are nice and white and they stay submerged. I started to think root rot cuz that always seems to lower the ph as well, but as I say I see no bad roots. Some leaves are starting to show signs of a def (looks like mag) but that is expected with the ph getting so low. The overall health of the plants seems good, the younger ones seem to be going great but the older ones on the right seem to be starting to stall and they all drink from the same res. I'm at a loss as to why the ph is dropping at that rate and am trying to head off a potential problem, any Ideas? first pics are of the worst leaves and then a couple of group shots to show the general health of the plants.
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