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What one dose does
PARAMETER
1 scoop / 100 L
Strontium
+5 ppm
To raise strontium by 1 ppm in 100 L: 0.2 scoops.
How it’s used
One level 5 ml spoon per 190 L (50 US gal) every two weeks, sprinkled on the water or sump while stirring; may be doubled in heavily stocked tanks. Natural level ~8 mg/L.
Cautions
• Keep undissolved crystals off corals
• High overdoses can harm organisms; test Sr if dosing more
Sources
Recommended rate 1 spoon/190 L per 2 weeks; maxDose encodes the doubled rate (2 spoons/190 L per 2 weeks = 1 spoon/190 L per week). Tropic Marin gives no absolute maximum. German page says 200 L instead of 190 L.