Good/popular product fr
littlesilvermax. Easy to use, was worried when started out about chloride buildup though seems not a concern (see
here).
As for ZeoMAg or dolomite had started a thread
here though there was
another thread already but seems to work in a Ca reactor when mixed at 10% to regular Ca media.
Only been on the Mg for a couple of months but I'm finding, since initially getting my Mg up in the system over a few days, able to maintain just by ensuring water used for changes is supplemented (haven't had to add to display) as new water was low from the start.
Can't get on the site now but for supplementing here's good
http://reef.diesyst.com/
Only effect I've noticed is easier to keep the CA up (no negatives yet).