Planted Tank Enthusiast
Join Date: Dec 2005
Location: Silver Lake, NH
Baseline pH when using peat, driftwood, and CO2 injection
I started up my first CO2-injected planted tank a little over a week ago and I'm trying to find the optimal amount of CO2 injection, but the addition of peat under the substrate and driftwood make it difficult to gauge the CO2 concentration using the "chart."
Here are my water parameters:
kH - 4
gH - 6
straight tap water pH - 6.8
tap water outgassed overnight - 7.1
This weekend, I had an accidental CO2 overdose turning my tank into a bubbling acid pool (luckily I didn't lose any fish). Leaving the CO2 off for two days and performing three water changes (50%, 25%, 25%), the pH is now at 6.3. That seems pretty low, so I'm not sure if the CO2 is completely outgassed yet, or if that is really my tank's baseline pH.
Will a cup of tank water left overnight reflect the pH drop from peat and driftwood, and provide a 0 ppm CO2 baseline pH? That is, will the difference of pH between this baseline and the actual tank pH be solely due to the injection of CO2?