Too much CO2 with DIY possible?
Hey guys, newb here. I've finally decided to go with live plants and am learning a lot reading your threads and browsing the net. This site is great and I hope to become a useful contributing member down the road. For now though, I am assimilating information and need a little advice about my DIY CO2 injector. First the facts, then the question. You can skip straight to the question if you please.
-Tired of dull plastic plants, and cheap Walmart ornaments in my 55 gal tank; want a more natural look. I love the look and atmosphere of living plants
-Just lost my buddy of 6 years, an 11 inch tiger oscar. Going with smaller fish now. Seriously considering discus, angel, and gourami.
-Prepping tank now. Tossed out my plastic plants and synthetic ornaments. Got some plant substrate, water is cycling now. Lighting is in the works.
-Found a nice article on DIY CO2 injectors and have one running in the tank.
-I am practical, and cheap to a degree. I don't mind investing on necessary expensive equipment, but if similar results can be obtained from DIY project, I will spend a weekend saving myself $20. After all, it's a hobby and I take pride in doing things myself (and hate getting ripped off).
I removed the aerator stone and got a true bubble count of 88 bubbles per minute. The pH of my tank has not changed in the 24 the CO2 has been running...holding at a nasty 7.6. So I'm wondering is this too much CO2? I've seen posts here where people are happy with 4-6 bpm. Having a fair understanding of biology, chemistry, and botany I am assuming that my primary concern in too much dissolved CO2 is lowering pH via production of carbonic acid. As long as my pH does not drop below desirable levels, isn't more CO2 better for plants?
I have three 2L bottles hooked up in series with T connectors, all converging to a tube with a stop valve that then runs directly to the substrate and is passed through an aerator stone. As such, I do have some control over decreasing the CO2 flow by disconnecting extraneous bottles.