View Full Version : additives and skimming

05/16/2008, 12:27 PM
I add my magnesium and my calcium buffers right in front of my over flow that way it gets sent down to the sump and through skimmer and through pump before it enters into the tank. I want to make sure that it is moving quickly so it dissolves nicely and doesn't crystalize. Will my skimmer take it out??? or should I turn it off before adding mag and calcium??

05/16/2008, 01:25 PM
No your skimmer only takes out bad stuff not good stuff like cal and alk and mag but add one first then the other so the first has a chance to dissolve before the other goes in also don't add two part at the same time or else they will either crystallize or react making the supplement useless.

05/16/2008, 01:47 PM
Are you adding powders or liquid?

I add liquid in the sump after the skimmer. I add Mag first, wait a few minutes then add Alk, wait a few then add Ca. Once you get your mag up you only need to dose it occasionally.