who uses both chemipure elite and polyfiter on a regular basis do both perform to your satisfaction want to set up simple Fowlr tank w/o skimmer for the time being 180 gallons to avoid extra expenses and as an experiment over the next year, water changes every 3 weeks will also be done filtration will be eheim canisters and aquaclear filters from other tanks, recommend your media for canister placement not interested in hearing about nitrates as I have run similar tanks on a smaller scale for years and fish are healthy and several yrs old. small fish like blennies, damsels, gobies, dwarf angels, pseudochromids etc will be the subject of this tank. Thanks!