Left Continue shopping
Your Order

You have no items in your cart

Read more

API Marine Magnesium Supplement 16 oz

20.0 lb
API Marine Magnesium raises and restores magnesium levels to maintain a thriving reef aquarium. The magnesium concentration of a reef aquarium should be between 1250-1450 ppm mg/L. The magnesium level gradually drops in reef aquariums as it is utilized. So, it is important to test magnesium levels weekly and add magnesium accordingly.