I"ve had severe problems with my PH
in the past but before trying to anything I needed to research...
I really need the info I asked for in detail to really get a idea.
before and after?
How much CC
Substrate or filter?
How long before PH
is not really on the high-end, but the 1.5 PH
jump can be very detrimental if sudden.
normally takes awhile and is gradual in its buffering of PH
, it generally has more effect on KH
which then affects PH
should be added gradually according to tank size, this step by step process normally takes weeks to achieve desired results.
It appears you may have other issues affecting your tank.
Never use untreated tapwater to do anything in the tank/filter, unless of course your tap comes from untreated wellwater...