Sounds like a very good product, tried using Kents Tech M to raise mag from 1380 to 1450 and with 100 ml the last 4 days does'nt want to move . did a 40 gallon water change this morning and tried some Epsom salt maybe that will bump it ... the Reef chemistry calculator is showingMy 2 part (Sachem Reef Fusion) has Mg included in part 1 so it is dosed daily with my Calcium supplement.