Interesting Magnesium Observation

[Doug]

Or do water changes with IO salt and include the correct amount of calcium & magnesium as per Ben,s instructions. {which as he said, is from RHF}/

I purchase my IO at a decent price and my supplements from Ben at a good price, making my water change still cheap enough and keeps my calcium up. My magnesium stays at app. 1350ppm without any other additives, esp. whats mixed in with the water change.