i am brand new to forum... so please excuse any etiquette fails. i have just a little experience w/ my planted tank...gory personal details..blah..blah..neglected tank..starting over. Had pretty good success w/ african cichlids..50 gal. tank..standard gravel..4' 4 bulb t5 fixture..diy yeast co2 setup......now starting over with a few plants at a time..a few baby cichlids at a time( five at present)and 3 plecos. need suggestions on beginning diy co2 again and keeping a balance with co2/oxygen/relatively few fish to feed plants. Cost is important of course. Will add more fish, plants,hdwr. as money allows.