Coral Essentials Boron 50ml SPARE PARTS for example this would suit

for example this would suit a Reef Flare M (90) on a 90cm long tank

In case of severe stress

strontium and carbonate hardness elements for the growth of the calcareous skeletons of stony corals

Auto adjusting to all water levels

Specifications: 25cm Stainless Steel

Coral Essentials Boron 50ml SPARE PARTS for example this would suitCoral Power Boron 50ml Boron Solution is a concentrated liquid boron additive, 50,000 ppm (mg L). Boron in natural sea water is in the order of 4 5ppm. Boron is a component in forming coral skeletons, co precipitating with calcium carbonate. Boron also assists slightly in the pH buffering of aquarium water. For the advanced aquarist, boron levels in marine tanks should be checked regularly to determine the take up in your system. Calculate boron usage