My fish are Dying

[beachbum1008]

i came home yesterday and my yellow tang was laying on its side on the bottom breathing but not moving. he died a short time later. today i came home and my 4 year old blue tang was dead. he was under the rock work so I took it out and found my male anthias is barely moving. I couldnt get my other fish to eat pallets so I gave them all brine with garlic and they responded. All of my coral is looking normal but my mushrooms.

I have 2 snowflakes that are the only fish acting normal. my sailfin tang , china wrasse and my female anthias are all sluggish. Im freaking out because no fish have any signs of ich or any abnormal markings.

My perameters are as follows.

calcium 450
mag. 1400
alkalinity 8.2
nitrate 5
phosphate 0

[nanoreef1]

Something is wrong check your water mite be warm? Something has to be going on

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[beachbum1008]

a little more backround ... my water temp is 78 i have a chiller. I also run carbon,gfo and have a skimmer rated for twice my tank volume. I use Rodi. I know theres something but Ive run out of things to check that I can think of

[cutterx23]

Salinity?

[beachbum1008]

I just checked salinity and its 1.025

[BetosREEF]

How often do u do water changes?

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[cutterx23]

Anything in there that may leach something into the water? Bad pump, stray current, etc?

[Corey760]

were you possibly in the tank with lotion on your hands or any other type of chemical?

[couger]

maybe even scented bodywashes like AXE?

[Corey760]

or spraying air fresheners or burning candles... ive had a problem with this before my LFS helped by suggesting a poly filter (i was in a 20 gallon at the time)

[jason142]

Any news additions?

[beachbum1008]

I havent added anything new to the tank in 2 months approx. I actually havent had my hands in the tank in the last couple of days but Im going to be washing religously now! but i went through my entire setup looking for anything thats different and the only thing that I can think of is I cleaned out my skimmer cup last week. my last water change was 3 weeks ago and it was 30 gallons, My tank is a 187 gallon tank. today I changed my filter sock and fed the remaining fish brine with garlic today. the normal pellets i feed is the spectra+a but they wernt interested in them today.

[Octoman4]

When was last time you changed out carbon?

[Bogg]

Start doing water changes

[beachbum1008]

My carbon is 1.5 months old and I usually do 30 gallons once a month for my water changes, but I will be doing one tomarrow