Im doing sort of a little experiment right now. I dont have (relatively) a lot invested in my tank as far as corals go and I have a wide range of hardy-ness in corals. I want to see if I cant get away without doing water changes. With my fuge/sump my nitrates have been locked in at 0 and without needed to get any 'trates out, i need to put trace elements back in. Well see how that plays out.
...but thats besides the point...
My suppliments include:
seachem calcium advantage which raises ca
, mag and stronium
seachem magnesium which just raises mag
and the loguls soultion but thats not really part of this
cccapt mentioned ca
get used in equal amounts, which is what I thought, however after frequent testing this doesnt seem to be my case and I wondered if there was maybe something I was missing.
I really dont have much of a load, so my ca
doesnt drop very quickly, but my mag was low to start (1080... via reef crystals) so I've been supplementing that to try to get it up to 1270. Other than that my ca
was at 380 and I wanted it up more around 425 just to do it (i know 380 is fine but I like the idea that my reef is as true to life as possible... for the time being)
I have not supplimented alk
which is the strange part, however the other day I did see my pH was low(er than usual) so I tossed in some marine buffer. That I know says it will raise alk
levels, so thats probably where that came from.
so I should start to see my alk
come down at some point if Im not mistaken? As long as adding ca
and mag wont raise the alk
, I guess that puts my concern to rest.