tell me how to remove all the nitrates thru small water changes.
If his fish add 10ppm of nitrigenous waste to the tank every week (which ends up being 10ppm nitrate added weekly), how can a 20% weekly water change help. his nitrates will climb until the 20% removed = weekly added (10ppm) which would stabalize around 40ppm. Water changes will NEVER get your nitrates down to 0 which is where we all want them to be.
I agree there are better ways, but they have to include nitrate removal that is not based of a fractional efficiency (PWC
). Macro Algaes are the easiest method as they will remove 100% of the nitrate. But they're not always possible. Resins are another possibility that will remove nitrates right down to 0. But they're not always possible.
The problem is we add nitrogen to the tank (in the form of food) and we need to remove it. Most of us want to remove ALL of it, and removing SOME, thru PWC
will not cut it. It also does not address the issue of nitrogen in > nitrogen out.
There are other members here who still use methanol dosing (vodka or vinegar) which simply binds the protien strings into longer strings, maximizing the skimmer efficiency and lowering the amount of nitrate being produced.
Nitrate Destroyer is NOT a chemical additive, its the same anaerobic bacteria type that naturally live in our tanks in small quantity. You just add more and then let them die and get skimmed or be consumed.
BASICS - no amount of magic math will get nitrates to 0 thru PWCs as long as you feed your fish food.