So I've read about diffusing CO2 into a planted tank and was recommended having a Canister Filter to place it the intake. But I was warned and also read about the possibility that it could damage the filter's impeller. I also read that another good method would be a Nano CO2 diffuser like this one:
http://cgi.ebay.com/Nano-CO2-diffus...QQptZLHQ5fDefaultDomainQ5f0QQsalenotsupported
Now, which of the two methods would be the best according to your experiences or knowledge?
http://cgi.ebay.com/Nano-CO2-diffus...QQptZLHQ5fDefaultDomainQ5f0QQsalenotsupported
Now, which of the two methods would be the best according to your experiences or knowledge?