OK... I have one of these small little tanks... 2g, with its own little filter and light all in the hood. The hood is totally enclosed. There are small vent holes on the top above the light fixture, which I assume, is for the heat from the light to escape.
Here is the problem, I just did a water reading and the ph is pitifully low, at 6. My tap is 7, and all my other tanks register about 7-7.2 normally.
There is only the 1 Betta in the tank. My question is this, why is the ph so low? Is it because the hood isnt releasing the carbon dioxide or what? There is nothing in the tank but gravel and a fake plant.
I did a very small water change of about 2 cups for now... what the
