hey how is everyone doing . i am looking for info on manully injecting co2 for live plant tanks . i have a auto injecter and it was like $400.00 . the manul injecters are much more cheaper but i do not know the ph and kh formula. all i know is the co2 should be 25 to 30 ppm. any info would be a big help i am going to get a new tank and a auto injecter would cost to much thanks
