Mysterious disease

[mr_alberta]

How big is the tank? 13 fish could be agression depending on tank size. I'm guessing something stessing them out at night as well. Or it could be a drop in O2 levels...just a guess though.

[michika]

We have a lot of waterflow, and I'm not seeing any slim on any of the bodies. All the fish were/are quite small. The largest fish, is only about 2" in length, and that is the foxface.

I did note today that the foxface sleeps with its hackles? raised, and did exhibit some minor agression towards my tang todaay while feeding.

I'm still having no luck researching what kind of damage foxface posion does on other fish.

[Ruth]

Does your skimmer run 24/7? Could be a drop in O2 levels particularly since it appears to be happening at night.

[michika]

The skimmer does run 24/7, except for when its off for feedings. cleaning, etc.

What causes O2 to drop in the evening? Just the lack of water circulation?

[Jason McK]

How are your inverts doing?

With all your corals doing great it really doesn't sound like a Water problem. I like the O2 theory.
You say everything looks normal and all fish are behaving normally before lights out?

One would think that inverts and corals would feel the effects of poor water or even water contamination before the fish.


J

[KrazyKuch]

Originally Posted by Jason McK

How are your inverts doing?

One would think that inverts and corals would feel the effects of poor water or even water contamination before the fish.


J

Thats what I think......I run the Skimmer 24/7 and it's a big beckett skimmer so I don't really think it's an oxygen issue as nothing has changed really in the last 5 months, why would oxygen be a problem now...

My inverts are doing fine my anenome's(sp?) are both open and out, hermits seem to be really active(more so at night) my starfish are doing their thing, and the snails are doing a great job at keeping the glass clean!!!

We feed mysis, Nori, Formula 1 pellets, spirulina, Krill(for the anenome's)
all of which aren't that old!

If their was a power failure I would notice that all my clocks would have reset!!

[Beverly]

Originally Posted by michika

What causes O2 to drop in the evening? Just the lack of water circulation?

Lots of algae/macroalgae will add lots of CO2 at night and O2 during the day.

Also, was doing some reading on isopods today related to an incident that happened to me last night.

Here are two articles on parasitic and scavenger isopods .....

http://reefkeeping.com/issues/2002-05/rs/index.php

http://reefkeeping.com/issues/2006-02/bp/index.php

[Murminator]

How bout the nori? could it be treated with something? soy? salt? preservatives?

[michika]

The two kinds of nori are, your standard green from BAs and the Julian Sprung red nori.

Has there ever been an issue with these foods before.

Thank you Bev for the readings. I'll take a look at the readings next chance I get.