I'm kind of struggling to get the calcium/alk
/magnesium numbers up in my nano SPS
The tank is pretty new (about 9 months old), so most of the hard corals are fairly small.
I've been dosing Reef Fusion 2 part, and can't get calcium anywhere close to 400. I've also been dosing "advantage magnesium" from seachem, but can't seem to get the mag to go up.
After dosing mag this last night and this morning 3 tsp in water added to the sump, I'm at:
calcium 380 (this is the highest I've ever had it)
A few hours after dosing, mag was still at 1140.
the display tank is 12 gallons, with a 10 gallon sump. I'm using instant ocean reef crystals and keep salinity at 1.025
/calcium, I've been dosing 4cc/day, but they don't really move, so my guess is that mag is causing the issues.
Overall, the corals look okay. Aside from the birdsnest which is growing nicely, nothing is growing like I want to though. Polyp extension is moderate to good, but I know it could be better.
So I see my choices as being this, do you agree?
- bump up dosing of cal/alk
/mag even more (the flux of pH makes me somewhat nervous though, so I'd like advice here)
- look into a higher quality salt mix that has higher levels of calcium/mag/alk
- consider dosing the salt water I add when doing my weekly WC
. (stupid idea?)
I've been fighting this for a couple of months and am just about out of ideas as to what to do. Getting too far into chemistry gives me bad flashbacks to getting poor grades in it in high school, so please be nice
Mostly, I'm nervous about overdoing it. I've been taking the dosing pretty slowly, as adding things to the tank makes me nervous.
Thanks in advance,