New DIY CO2, rapid decline in pH
My DIY CO2 has been running for 4 days now. 10g w/ 2 java fern, 2 anubias and an unknown bulb plant.
My tap water is alakline and for the life of the tank it's always run at ~7.6. I understand the chemistry which is driving the pH down, but is this decline too rapid?
My numbers pH/KH/GH
day 1 7.6/4/8
day 2 7.2/5/9
day 3 7.0/5/9
day 4 6.6/5/10
I'm guessing my KH is borderline and not buffering the H+ production from the added CO2. Should I titrate in some NaHCO3?
Re: the GH the day after I started the CO2 I noticed and Ich problem, I believe from some recently added nerite snails (only addition to the tank that correlated). I have been using higher temps and aquarium salt, which I'm guessing raised the GH.
Other livestock 2 platy 2 honey gourami 3 cardinal tetra 1 gold algae eater 1 common goldfish