> I have a hard enough time keeping up with trimming my plants WITHOUT any > fancy gizmos or CO2 injection, but I've spent years killing various > species of plants figuring out which ones do well in my low tech systems, > and which ones don't. You can get a pretty lush looking tank without ANY > special equipment. I guess the first question you have to ask is whether > you grow plants for the PLANTS or whether you grow plants to keep critters > happier. As long as I can create a planted environment for my critters, > it's OK with me if Amazon swords are impossible for me to grow (wink). > > Betty Goetz I do agree with this. The tank w/o CO2 is just as overgrown as the one with. The CO2 regulator was a birthday present. I bought the CO2 tank ages ago but had never hooked it up. My wife decided to do something about that. One thing to keep in mind about the $$ aspect. This is stuff does not in general wear out. So if you spread the cost out over 3-5 years it is not that much. Filling a 5# tank with CO2 is cheap. I suspect the high tech regulator/bubble counter thing will not live as long as a purely mechanical system, but with a three year warranty I am not worried. You can do low tech just as well, but that's too much work for me. I have enough problems remembering to do weekly water changes, without have to worry if the CO2 is going. -- Dana _______________________________________________ GSAS-Member mailing list GSAS-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/gsas-member