What is Wrong with My Tank???

Ok, I'm glad you guy can help me. I have a 40 gal reef-in-progress with roughly 30-35lb. of live rock I'm am goin to add more rock with some corals eventually. I have the Coralife aqualight 1 96 watt 960nm antinic and 1 96 watt 50-50 (10k and 460nm) a bak pak skimmer and a emperor bio-wheel (w/out the wheel in it) I am just in the closing stages of a hair algae battle (it was BAD!!!!!) and and using carbon and phos-lock in my bio-wheel. I have
0 nitrite
0 nitate
pH 8.0-8.3
Alk 280-350ppm (usually over 300 on test dip strips)
Sal SG 1.024-1.025
Phosphate 0ppm
Thats all i test.

Ok, now to the problem I have mushroom corals, zoanthids, a green star polyp colony and a pink flower pot coral. (Which is doing well)
The star polyp and the flowerpot look fine (flowerpot is fading a little) but all my other corals (mushroom and zoa's ) are shrunk up and losing their color. (Flowerpot not shrunk but fading) My zoa's and mushrooms looked great when I got them but now they look terrible all faded and shrunken. The zoa's still open, and spread a little (I think). I have added I small bottle of Purple Up and a 16oz bottle of Purple Tech and I only have one weak little patch of Coralline. I even added some coralline from a friends tank. No Coralline growth at all. I started dosing small amounts of (2 little fishies) iodine (looked like some zoas had a little more color) and some Reef Calcium last week. This week I am dosing 2 ml of iodine (recommended amount for 40gal) and 10 ml of Calcium (recommended amount). The tank is my first and it's been running for 2 years ( hair algae outbreak when I upgraded the lighting from 20watt strip to 192watt coralife) and I did alot of stuff wrong when I started (killed sand, but got live sand to put in it) and it was 6 months running before I added my first damsel. Fish and stuff are healthy
Royal Gamma
Yellow Tail damsel
Brittle star
Coral Banded Shrimp
1 astreus snail
Various blue leg hermits (5 I think)
Can anybody help me?

 

Do you have any friends who are electricians? I would check for stray voltage.

 

I stick my hand in it during water changes and I dont glow! ?????

 

It needs to be measured with a voltmeter.

BTW, give yourself a papercut, then stand in a little water on a concrete floor barefooted and then you stick your hand in there. (I had stray voltage once and I didn't know it until I did the above).

 

How about testing your parameters before adding all the chemicals??

 

Could it be my salt?? All my coral shrinking, I believe, is due to lack of trace elements and stuff like that. I use Instant Ocean salt not the Reef Crystals. Could that make the difference? I read that water changes add all thoes Elements need for a reef. not just FO of FOWLR. If so can anybody recommend a good salt mix?

 

I switched to Coral Pro a little over a month ago from IO and my corals have gotten bigger and more colorful with multiple new zoas growing, new mushrooms popping up even a new baby toadstool that's about the size of a dime now. I love the coral pro salt and I do not add any supplements or chemicals

 

Are you sure this is correct? I would like to know the calcium level if possible.

 

Don't dose anything you can't test for.

The Alkalinity is pretty high 280 - 350 ppm = 15.68 - 19.6 dkh.

 

also I would definitely check for ammonia, when my tank looks off I test ph then ammonia