Wow i really cant say what to use here. Bigger and more skimming might help, but youll need something with tons of air intake like a beckett skimmer or something with tons of air draw. But first id check your co2 in the basement with a tester to be safe.My tank needs about 400ml's daily to keep parameters. It was just beyond reasonable to keep with that amount both for my sanity of having to make it and dollar wise.