Magnesium Pronto™ 1000g Adhesive or any fine sand made

or any fine sand made of calcium carbonate

The kit includes the dry cement

Additional layers of powder can be added and solidified with the bonder

When AcroPower is dosed into an aquarium

the pH of an aquarium won't stay up

Magnesium Pronto™ 1000g Adhesive or any fine sand madeMagnesium Pronto is a fast dissolving blend of anhydrous magnesium chloride and anhydrous magnesium sulfate that makes it easy and economical to rapidly raise the magnesium ion concentration in aquariums. Supplemental magnesium is often required for reef aquariums because corals, clams, snails, tube worms, and calcareous algae extract it from the water. Packaged in 250g, 500g, and 1 kg jars. Bulk sizes also available.