Aquaforest - Mg Plus 200 ml
Solution increasing magnesium level in marine aquariums. Application: 10ml of the solution increases Mg level of 5mg/l in 100l (27 US gal.) of water. Maximum daily dosage is 20ml in 100l of water. Magnesium level in reef aquarium should be kept at around 1188-1460 mg/l (ppm).