I started dosing VC 6 days ago. I'm using 1000mg buffered tablets from GNC. My water volume is approx. 62 gallons. I dosed 500 mg 2x a day for 2 days, then 1000 2x for 2 days, then 1500 2x for 1 day, and 2000 2x a day yesterday and this morning. 2000 mg in 62 gallons is just under 10 ppm, right?
I am hoping to improve some melting zoa's. My 5 polyp AOG are down to 1, and it has been closed for 2 weeks. I also have a 3 polyp frag of orange zoas that are closed, and 2 other colonies that have some closed polyps. So far no improvements but it is probably too soon, right?
My questions are:
- what ppm should I be aiming for for problem zoas?
- since I started dosing, all my zoas and shrooms are completely closing up at night, when before they only sometimes and partially closed. Is this normal and OK? They come back out during the day.
- after I dose, my sun corals open up

I think they just feel the particles and think I'm feeding them, but is it possible that they actually trying to eat the VC?
- I use a poly pad in a basket where my tank feeds into my sump, that I change once a week. It never clogs up enough that it holds any water, until yesterday, when I noticed that it was so clogged that it was holding about 2" of water. It is only 5 days old. Does the VC keep particles together, making them bigger, that would be trapped more by the poly?
I took some before pics, so hopefully soon I can post them with some afters!