Neptune DOS Which Bag?

[shanedag]

I’m new to reef tanks and have just set up a new tank. I’ve purchased the Neptune Trident, DOS, and DDR. I’ve purchased the BRS calcium chloride, which I think is the right bag for Calcium. I’m planning to add that to one of the DDR containers. I’m a bit confused on the Magnesium and Alk though:

• Which magnesium bag to buy from BRS...2 or General Adjustment?
• Planning on adding Magnesium mix to second DDR container. Do I need a second DDR or suitable container for Alk?

Hope these aren’t really dumb questions. I’ve been searching around without much success.

 

[Ippyroy]

I wouldn't worry about Magnesium yet. Alk is the most important and the first one you need to get stable. Magnesium is barely used and can easily be dosed by hand. I personally am using the BRS Tropic Marin balling method.

You shouldn't have to dose anything for a few months. Water changes alone will suffice. Don't even bother with dosing. That is is only needed after water changes no longer keep alk in check.