Water PH issue

The tap water PH where I live is just over 8.0 so I’m using PH down. When I let the water sit in the reservoir I notice the PH increase by 0.3-0.4 per day. I measure the PH both from the top and from the bottom tube so it is not due to bad mixing of the water. Is this normal or is my PH-down just shit?

Normal,nothing in the water for the pH down to grab.I maybe wrong but after you add food to the water it seams to stay.

myke said:

Normal,nothing in the water for the pH down to grab.I maybe wrong but after you add food to the water it seams to stay.

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I do add food when I go away a few days and need automatic feeding but the PH keeps going up. This is really where it causes issues due to the discrepancy between the waters natural PH over 8 and the needed ph between 6 and 7.

Qwertyl said:

I do add food when I go away a few days and need automatic feeding but the PH keeps going up. This is really where it causes issues due to the discrepancy between the waters natural PH over 8 and the needed ph between 6 and 7.

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Do u have an airstone in the res?A fella here was helping me awhile back.We tried 1.5ml per 5 gallon of pH up im my solution and that seamed to stabilized the ph.

myke said:

Do u have an airstone in the res?A fella here was helping me awhile back.We tried 1.5ml per 5 gallon of pH up im my solution and that seamed to stabilized the ph.

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Got no airstone but two circulation fans in the water reservoir but don’t think circulation is the issue as the PH also increases when I keep it in smaller buckets.