Treating with Vitamin C

[Pufferpunk]

Some of you have heard my complaints of losing entire colonies of zoas/palys that have been wonderful for years & for no apparent reason, got pinched/stretched, covered with brown & melted away, while colonies right next to them are fine. I read somewhere about raising your coral's immune system with vitamin C.
All I found was this article:
http://www.reefs.org/library/aquariu...996/996_4.html

I decided to try vit C. At 1st I used 1x1000mg in the tank morning & 1 at night (tank is 90g/20g fuge/20g sump). I didn't see much improvement in my zoas, so I raised it to 2000 morning & night. I really think I'm seeing improvements! The last straw was seeing my really nice colony of Tub's blues closing & pinching/stretching & getting brown. I knew what was coming next...

I have been dosing vit C for about 2 weeks now. I put the whole tablet into the sump, where there is most agitation, where the water dumps in from the overflow. I have rubble in there, to help with bubbles so I'm sure the tab fals in between. That's also where I do all my other dosing.

Now, most are open & looking great again--only a couple are still closed. Same with some of my other faltering colonies. Recession has stopped completely & my zoas/palys have never looked better or more colorful.

I just tested:
dKH 8.5
pH 8.2
Ca 430
NO3 1
Exactly what it was before adding the vitamin C, 2 weeks ago.

Has anyone every try this method or read anything about it? Can I do any harm by keeping this up indefinately? I'd really like to see someone that is having the same problem try this & tell me it isn't just a coincidence.