Necessary Chemicals for Maintaining Intex-Style Pool?

[dchannes]

All this is new to me. I bought the HTH 6 way test kit and these are the results:

Intex style above ground, 15' round...the box says it's 4000 gallon.

tested 7/18/12 2pm

Chlor: 3/6
Ph: 7.2
Alk: 280
Hardness: 40
Cyanuric acid: off the chart. It's not cloudy at all.

Other notes:
The water is a cloudy blue/white color. I can almost see the bottom.
The pump has been running all day. The filter was cleaned this am and the output is strong.
This is well water with high calcium content.
There could possibly be some iron in it. Generally, it not a problem here in south central Missouri.

Chemicals on hand:

Transchem Muriatic acid
active ingredient: Hydrogen chloride 31.45%

hth 1" chorinating tabs Trichloro-a-Triazinetrione 92.4%
hth pH minus
hth Super algae guard
hth Super concentrated clarifier
hth metal control

I also have an open sack of pool salt(30lbs left). (My wife says she put 50 lbs of salt into the pool).
Sorry this is such a nightmare. But I need to know if you think this water is savable. Thanks, DC