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SNIP

There are 4 plants in the tank and I have added a large rock feature
(plastic resin) for the fish. I have got a PH testing kit and the PH level
is now at 7.0 which I am told is good for a mixed fish tank.

Regarding the PH levels. My tap water was a PH of 8 which was a little bit
too high, now to lower this I used water from my tap water filter (the
ones
you use to filter your drinking water) as I did a test on this water and
the
PH level was 5.5 so I guessed that adding this water would eventually
balance the PH level out.

what is the pH of tap water after sitting in a bucket for 24 hours?
Bob