Roan Art said:
Now this is what scares me. I don't intend to inject into a canister, I was actually thinking of using a diffuser instead. Do you think that this could have been avoided with an automatic system? Most are saying I just need bare bones, but what if you are not home and something goes wack?
I want to use CO2, but I really want what's safest for my fish.
Roan
I had (still have) a bubble counter, needle valve, and the bubbles went directly into the water intake of the Magnum Cannister, because going through that system and impeller was the best way to diffuse. Little 2lb or 5lb tank (can't recall what the size is for sure).
The mistake was really mine. I turned the CO2 off for a few weeks, and then went back later and turned it back on. I thought everything was fine, until the fish were swimming sideways, upside down, etc... It was a Sunday, I was watching football, and my wife said "I think something is wrong with your fish... are they supposed to be doing that?"
When I got to the tank, I saw that I had bubbles streaming through the counter as if I were blowing on the line.
The mistake I had made was I forgot that I had two controls to set the flow. One on the tank, one on the needle valve. The needle valve was fine, but I had cranked open the tank, and had forgotten that part of my "regulation" was keeping the tank valve just slighty "cracked" open.
So- this was kind of a homemade system but one that is nearly as good as some that you can buy. However, I would not worry about it too much if you are anal about watching it and you get a good system.
The main reason I stopped doing it was the accident, but also, as I said, plant growth is pretty dang aswesome with a good substrate, the proper amount of lighting, an occasional micronutrient fertilizer, etc... But that is with the plants I have, and I do keep a highly stocked tank, so I do have "natural" CO2 injectors too! Another reason I stopped is I was afraid of an eventual crash, even though my buffer seems capable.
I think some plants might
need improved CO2, while others simply don't. The tank I have now is narrow and deep (65 Hex), so I have limited planting space... so I choose "easier" plants. When and if I get the mondo tank I want to build into a wall, I will go shallower and have some even more intense lighting, and specialty plants, and then I may need to go with CO2 again.
But I doubt it will be necessary...