I have a 90 gal. 17 month old reef tank with a
sump and
refugium. I have mostly softies, a clam and an anemone. once a month after the water change I test for
ph,
ammonia,
nitrate,
phosphate,calcium
alk, and
salinity. In my
fuge I have a
dsb,
live rock and 4 mangrove plants. I just read somewhere that mangroves suck up alot of magnesium. I have never tested for magnesium. Infact, I can't even find a magnesium test kit anywhere in my area. so before I order one online, my question is, do I really need a magnesium test kit? or do my monthly water changes replace the magnesium that my mangroves use up?
