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Just a note on N2. An N2 cartridge is ONLY good for 1 tub of water. If you lose (remove then add) more than 1/3 of tub volume, N2 is no longer effective and you are wasting $. This is because the ionization process N2 uses is completed in the first 36 HRS after adding it to the water and the chemical change to the contents of the cartridge means it no longer has the capacity to treat "new" water. Keep this in mind if you go through water.Good luck!Drewski
Nature2 says if only using MPS to oxidize and water gets cloudy, then add chlorine. Approved product is dichlor, not bleach which is mostly water and fillers.
When filtering, only use pump 1 on low speed. High speed on pump 1 has bypass, so not improving filtration. Pumps 2 and 3 bypass filters totally.
You did not mention cleaning and/or rotating filters. You need to clean monthly. Rotating is a good idea.