I top off ~1 gallon per day of RO
with 2ml of each part of bi-onic, 2 drops of strontium, 2 drops of iodine and 1 drop of iron. The bi-onic seems to keep my ph
at ~8.4 and my salinity at 1.025. I have also been putting a bit more calcium (2.5ml) in because it seems to keep it balanced better.