codriscoll92

I have a 20 gallon aquarium with a sponge filter and was looking into CO2 injection, but from what I've read you should have minimal surface agitation when using CO2. None of my plants are particularly demanding, so I am not sure if it will still be possible to mildly increase my CO2 levels by just having a slightly higher rate of CO2 injection (to offset the surface agitation) or is it basically pointless to add CO2 unless I get a different filter?

I have a 20 gallon long tank and am trying to figure out how much lighting I should have. I'm not using CO2 and the plants are dwarf sag, limnophila sessiliflora, dwarf sag. The tank came with a 8W, 900 lumen LED light which is on for 10 hours/day - and I'm unsure whether this is enough? The lid has a second slot so I couldget a second light (they make a "plant" version which is also 8W LED but I think has more wavelengths that plants can use). So this would bring me up to 1,800 lumens.