Visited the pet store and got a PH Adjust from Nutrafin to bring the Ph
down.

Which means no fish for me

Btw a friend of mine that also has a tank, told me before pouring this
chemical in the water to bring it down to remove the charcoal bag out
of the filter otherwise it will require more chemical poured in the
water.
According to him the charcoal absorves that chemical leaving it no time
to change ph.

Any truth in this?


Also what is the correct temperature in Celsius that I should have for
the water?