u/sweetreleasematt

Hi guys, this is my first run with autopots. My question is,I ph"ed my reservoir to 5.8 and within a few hours its up to 6.5. I have a recirculating pump that comes on ever 4 hours for a half hour. Im using general hydroponics flora three part. I added ph down to the tank to get it back to 5.8 and again with in a few hours its right back to 6.5. Any suggestions? thanks guys.