any idea how to fix this should i just flush with fresh proper ph water with no nutes until the ph stables ??
the PH will be stable as long as you stop putting shit in it, just the AG tabs. also use bottles water don't use water from the tap, tap water has bad stuff in it, like chlorine. One thing to keep in mind is that the ph will fluctuate it's common, I have to lower my PH at least once every couple days. just use bottled water with the AG tabs and use ph down to control the ph, check the ph everyday and adjust as needed. keep in mind it's common to have to lower the ph every couple days especially in a aerogarden.
I know bottled water can be an expense. I fortunately have a ice mountain account(if you intend to grow a lot, bottle water service is cheap and easy about $20 a month). if you have to use tap water let it sit out overnight to evaporate all the bad stuff.