Please Help. Something is wrong but what?

[realest]

OK, a little info about my tank. I have a 55gal tank and a 24gal fuge. The tank and fuge have been setup for over 4 months now.

Currently, I have (1) maroon clown, (5) Barlett Anthias, (1) Magenta Dottyback, (1) Blue Damsel, (2) cleaner shrimp, (2) emeral crab, (10) hermit crab, (4) turbo snail.

As far as coral goes, I have pulsing xiena, yellow polpys, brain, duncan, clove, gonipora, maximus clam, dandrophilia, motipora danae, purple birdnest, neon green frogspwan.

Everything is doing really well for atleast the past month.

I have been using filtered ocean water for (10%) water changes every week. (Purchased from my lfs). I have recently purchased a ro/di unit and have decided to make my own saltwater for weekly changes.

I have mixed the water for 24hrs and have tested ppt and salinity before making the changes.

I changed the 10% of water on 1/12/08. Everything have seem fine until I came home today.

(1) of my barlett anthias just died. I have taken him out of the tank and see what seems to be wrong. No sign of anything.

Tested my water and the result is:
PH-8.2
Nitrate- 0
Nitrite- 0
Cal- 380
Alk- 7
Phosphate- 0
Ammonia- 0
34ppt
Salinity- 1.026

Please advise!!

 

[chin]

Anything else die in the tank? How do the corals look? If something is off w/ your water parameters, a lot of times your corals will look like crap. Is there only one anthias or are there others?

 

[chin]

Edit....other anthias that have died?

 

[realest]

I have total of 5 anthias and only (1) of them have died.

My corals all looks good. Everything is opened and is beautiful.

All other fishes are all ok.

Any thoughts?

 

[tmz]

They're pretty aggressive at least towards each other. I have 4 in a 120 and they chase a bit but take territories. Five may have been too many in a 55.

 

[scowiii]

Anthias are best kept in pairs. So the two paris probably picked off the odd ball out.

 

[chin]

I would only start to worry if other critters in the tank start to die. I agree w/ the others, anthias do best in pairs and its possible they offed the odd ball

 

[realest]

So you guys think about 1 month being together in a tank. The remaining 4 anthias decided they didn't like the (1) and only one and have taken his life?

I am not questioning you guys. Just i want to make sure that is the case. I just don't wanna see my tank going down slowly without a cause!

Thanks again!

 

[Tylt33]

The LFS has six Bartlett's in a 120... they had seven, but one died for unapparent reasons. Sometimes life is random.