Two things I'm currently not super-happy with:
1. Red Planaria: flatworms are unsightly and possibly irritating corals. I've tried a single dose of Salifert's Flatworm Exit twice, about two-months apart. Both times it wipes out lots of worms, but they slowly come back. I may try another round, with this time dosing two or three times at one-week intervals to get the stragglers. Will report back with results.
2. Coloration on SPS corals: I'd like to take it to the next level. I keep the big three parameters pretty close to these values:
Alk: 9±0.3 dKH
Ca: 425±25 ppm
Mg: 1300±100 ppm
I started checking nitrate and phosphate and dosing them to be in these ranges:
NO3: 1-3 ppm
PO4: 0.1-0.15 ppm
About 7 months ago, I had dinos, which seemed to wipe out the phosphate and nitrate and make the corals lose color. Dinos are visibly gone now, but maybe they have stayed around at a low level and are still affecting the corals, I'm not sure.
I started feeding more, added a couple fish, experimented with turning off the skimmer periodically... seem to be getting more algae growth now, but coral colors are still not superb.
Any recommendations out there?
Maybe it just needs more time.