My water pH is unstable

grumpalicious

New Member
I don't know what to do. I recently got back into hydroponics but I've never really had this happen to me so badly before. The ph keeps rising after I adjust it. The plants are not big enough to absorb enough water or nutrients to really impact the reservoir. The water is fresh and can't have algae in it.

Why is this happening? In two hours the PH went from 5.8 to 6.3. Two. Hours. It's not stable at all. If I wait a night the ph will go back up to at least 7.0.

I'm using general hydroponics PH down. Is this product simple garbage?

What the hell is happening chemically to cause such drastic changes in such a little amount of time? Where the hell is the PH down going?
 
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