Long story short I have figured out my PH out of the tap is 6.5, after a couple days it is 7.6+. KH 2 GH 0
Why? any ideas?
zero GH is not good for plants or fish.Fish have surprising good tolerance for PH changes. I have seen them survive a PH change of 7 to 8.5 daily without any noticeable long term affects. However a GH of zero is a well known killer of shrimp. Fish are more tolerant than shrimp but their long term health is impacted.
yeah , coming to the same conclusion.
no water softener but it is city water . I have their reports, where would that be listed under? What might it be called?
Frequently GH but often the CA and MG levels are also listed separately. Just post a link to it so anyone can look at it.
I added a bag of crushed coral to my filter to regulate (biofilter, not carbon) and everything was smooth sailing.
crushed coral would work but that just provides calcium. Plants and animals need a mix of calcium and magnesium. Instead of crushed coral you can use dolomite which is a mix of calcium and magnesium carbonate. This will buffer your water nicely. However if you are using CO2 it could cause your GH to increase daily which is not good. But for a non CO2 tank it works great but your GH would be limited to about 1 and you wouldn't need to add any KH to the tank and your PH would stay close to 7. Many would claim a GH of 1 is not enough i saw no issue with shrimp, fish or snails.
For a CO2 tank I would use a sulfate GH booster. it will not be affected by CO2. Two good ones are Seachem Equilibrium and Nilocg.com GH Booster. You can use it to target an GH you want.
I thought PH swings were worse than stable GH, did not realize GH was at all an issue as long as it was steady. I switched to drop acclimating thinking my acclimating was an issue. I would have thought drip would have solved both.
PH by itself is not really hazardous. But a PH change does indicate the chemistry of the water has change and that may or may not be hazardous. GH does play a role in water chemistry as well as fertilizers, KH boosters and water conditioners IF you can keep everything stable at good levels your fish should do well.