DIY Co2 75 Gallon - PH drop and major impact within 24 hours?
24 Hours ago I set up a DYI Co2 system with two 2 Liter bottles, two cups of sugar and one tablespoon of yeast per bottle. I had the tube sitting in the tank and within twenty minutes, 6 to 10 bubbles per second started streaming out. I attached an air stone and placed it directly under my 1000 gph power head. Soon after, the water was filled with little air bubbles and they started gathering on the top.
The tank is a 75 gallon tank lightly planted with two angel fish in it. It almost appears as if the fish are now struggling. They won’t come to the surface to eat and their gills are moving 100 mph. I check all my water parameters and for the most part, everything seemed fine. The PH however had a major drop. My PH right out of my tap is 7.6, but this morning in the tank with the co2, the PH is now 6.4. I posted another questions regarding my test kit and received some advice on how to calibrate it. I calibrated for the PH and again, the reading is still 6.4.
I always thought that a DIY co2 on a tank this size would have very little impact, but I figured I’d give it a try anyways as I already had all of the required items.
Is everything normal here given the info I have provided?
Also, should I be pulling the tube out of the tank in the night when the lights go out?