Isn't the recommended dosage for B-IONIC Magnesium 1.5ml per gal
? (this dosage should raise Mg
by 15ppm). 25ml/25mg may be on the low side, dosage-wise.
What is your current Mg
BRS has a reef calculator on their site. You can use that to figure out how much Mg
you'll ultimately require (treat Epsom Salt as magnesium sulfate crystals). They recommend not increase Mg
levels by more than 100ppm per day.
You may want to dilute 2-4 cups of epsom salt (if you're going with that) in a gallon of RO
water than add 4-oz/8oz (or less) a day and see how much a single dose raises your magnesium levels.
What salt brand are you using and do you have a lot of stony corals?