Originally Posted by Daxhua
When testing the PH of your water source make sure to let it set out for a 24hr period before testing. For example my tap water's PH will read above 8, after 24 hrs it will read about 7.8 and my tank's PH is 7.4. Make sure your test kit isn't expired. Your tap water may need alkaline buffers to bring up and maintain a stable KH
But we need more info like;
What kind/brand test kits are you using?
What are the parameters of your tap water?
What size tank?
Do you have driftwood or peat moss?
Still having this issue and back with some metrics.
My tank pH got down to 5.1 this morning after a 50% water change on Sunday. I did another 50% change this morning. The immediate pH reading was 6.8 and 6 hours later it is down to 6.1.
I am using a Milwaukee pH monitor and API KH
/DH & pH titration tests.
It seems like my tap water's buffering capability is very low -- the KH
test turns yellow on the 2nd drop, indicating 2 dKH
For what it's worth, the quality report from my local water supplier lists the average alkalinity ppm
as 17, which confirms very soft water.
test was green on the first drop.
If I test the tank water, both indicate little to no ppm
The pH of the tap water after sitting is ~7.4.
the tank is 75g.
As I mentioned, this was never an issue before, so there may have been a change in the tap water.
What are some of the best ways to buffer the tank? I want the pH in the 6.5 and up range.
Thanks in advance for any advice on buffering methods.