you know something isnt working and am very stoned and tired, but l dont think giving them 6.4 is bad advice if you want to save them. Or just stay in lockout. Yes dwc is 5.4 to 6 ph but if your plants are lowering ph below 5 then you have to feed for upper ranges and 6.4 is the lowest high sweet spot. Sorry if l didnt make myself clear enough. But lm not saying once problem resolves you cant lower again. Thats all l got, l just expierienced low ph issues and my plants look like yours l was just trying to help.
