HELP! NastayNatron's tank

[lo_yyc]

OK, first - thank you SOOOOO much!

I found activated carbon and a filter sock - will that work if I just fill up the filter sock and place that in the sump?

For dosing, there's calcium and alkalinity that both work on a dosing pump, but I'm not totally sure how that's set up. The display thing says that the pH is 8.6, but I don't know what it's supposed to be.

I think he has some salt water mixed, but I'm not 100% sure. I didn't know how else to test it so I tasted it and it tasted different than the RO water (I think, anyways) - but I'm not sure how salty it should be.

I think it's 125 gallons, but it's about 6 ft by 3 ft by 2 ft or so.

It was definitely cloudy like a bathroom mirror after a hot shower when I got home (before I took out the fish). I'm not adding anything to it except food.

Yesterday when I emptied the skimmer cup, the rest of the water in the sump was clean - I was just emptying it to be safe, so it shouldn't have overflowed into the tank. I just re-emptied it now to make sure as well.

So far I haven't seen the missing fish, but there's no way to see if they're behind the rocks.

As far as the fish I can name, the ones I can still see are:

-female square-spotted anthia
-copper banded butterfly
-tang - like Dory on Finding Nemo
-orange clownfish
-3 cardinals
-leopard wrasse (still alive)
-another tang, I don't know what kind, but it's black and yellow/white striped and has like flowy fins (sorry for the poor description)
-a third tang, it's the kind that either comes in blond or dark or whatever and has lipsticky looking lips
-flame angel fish
-coral beauty
-diamond goby
-black clown fish (can't find)
-male square spotted anthia (can't find)
-2 other, smaller anthias (can't find)

Hope that helps a little, I'm sorry I'm so clueless.

Thanks again