greg if ya want to do an order im sure i will be in with ya. i want to try this out

Why not order from ChemMaster? He's Canadian. Stuff is premixed so it's just scoop and go.

http://www.canreef.com/vbulletin/showthread.php?t=26590

That make more sence, thanks Tony

Terry I will do some research into how much I might need for the new tank, find out how much shipping is and let you know

I have a question about the calculator and dosing mag.

Let's say my tank is 180 gallon in total (main + sump) and i am using Sea Chem Magnesium Advance and I would like to raise from 1300 to 1400

The calculator says the amount i need is 171 tsps; 855 grms; 30.15 oz


So, do i pour this whole amount into 10% of freshwater change or directly into the tank? Raising 100ppm per day is safe right?

Thanks

Don't forever to account for sand and water rock displacement