Use Reef Secrets dry supplement range to make your own macro element supplements (Calcium, Magnesium and Alk). A lot cheaper than buying traditional type liquid supplements. Great for large tanks with heavy uptake of elements.
750g into 1 Gallon of RO water mixed with 1.25kg Magnesium Part B will make a solution containing 47,000ppm Magnesium.
|Username||Bid amount||Bid time|