I'm wondering how the result like for you after using AIO does it really bring down the nitrate down to zero?
For P04 remover did you try using?
Seachem - PhosGuard
I will be using Prime as RODI need to get replacement cartridges. What are the brand to go for refractometer oh ya what the idea sanity level if i mix salt with water?
Too some effort to read thru the entire progress, at one point of time you did use AIO bio pallets may i know are you still using it now?
If not currently what are you using to control phosphate and Nitrate for your tank?