I have 2 55 gallon tanks side by side. My tank has 5 angels, 3 medium size and 2 very small ones. I have 1 discus, and about 7 cory cats. The kids tank has about 75 or more guppies from a couple days old to maybe three or four that are full size. It also has 2 frogs, 2 coolie loaches, 2 clown loaches, 2 upsiode down cats, 5 cory cats, and who knows how many snails. Ok here is were I get confused. I do 20 gallon water changes every week to each tank. I have 3 large pieces of drift wood in the Angel tank, and only one in the guppy tank. My PH in the Angel tank is 7.6, but in the guppy tank it is 6.6. Measured tap water this morning and it was 7.0. What gives? Why the increase in one tank and decrease in the other. I also have a 29 gallon and those readings corrispond with the Angel tank. Any ideas for me?
Confused about 2 tanks with different PH levels.
- Thread starter bnii
- Start date
i think that driftwood buffer pH raising it right?
also the larger # of fish in the guupy tank produce more readily decomposable waste than the large fish. so that may be something.
also the larger # of fish in the guupy tank produce more readily decomposable waste than the large fish. so that may be something.
Wood leaches tannic acid, which, as per the name, causes the water to become more acidic. The higher stock level would cause more detritus build up, which also will cause a drop in pH. By the sounds the higher stocking of the second 55 is the cause. Although, it sounds like something is missing in the equation still.
Yep I was thinking substrate too, same in both tanks? I'd figure the extra bioload in the 2nd tank might be lowering the pH in that one, but something in the 1st tank & 29 is raising it. No rockwork in any of the tanks?
WyldFya;760043; said:
Of course.
Also, tap water ph suffers daily changes. The day you measured it was 7.00, the day you put it in the tank could have been near 8.00. The Ph in the Angel tank has not increased. Water had a higher PH on that day and you must have something in same tank that is buffering the PH.