Free weed to whomever helps me solve this

Treating the well, installing uv filter, and will test adding cal mag to a few plants also. All the buds are still growing strong, no burnt pistils. The yellowing also stopped since I began hauling water in. Newer pictures from today.

good job man.... of course the water was the issue you know what you're doing
woot I was right, a good guess

At some point you will need to solve the well water problem. Hauling water will be a hassle. Is your pump inside the well or external? Does your well cover look sealed? Is the water ever cloudy?

wiseoldvtr said:

At some point you will need to solve the well water problem. Hauling water will be a hassle. Is your pump inside the well or external? Does your well cover look sealed? Is the water ever cloudy?

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Hauling water sucks. The pump is inside the well and it doesn't look cloudy.

That is good news. Its probably a deep well, sealed from runoff. The water should stay consistent from season to season. With the low ph its probably a mineral/metal issue. The UV won't help with metal/mineral issues.