Cap dying! Wonder why

[MikeyBoy]

Here is a pic of a beautiful Cap that has been doing really well from the first day I put it in the tank.

All of a sudden about a week ago, I can see it dying from the internal cup outward. Its been moving about 1/8" a day.

The white part is the part I am concerned about.


I have two other big caps right next to it that are doing fine, are they in jeopardy?

Should I break all the good part off?

Please advise.

Mikeyboy

[MikeyBoy]

sorry, here is the pic

[MikeyBoy]

I just dipped it in Tech d / Lugols / water solution.......

I will give it a couple of days and see if it progresses.


Mike

[Tim Marvin]

Have you fragged or killed any zoo's lately?

[::pete::]

Mike
Never mentioned the water quality?

[::pete::]

More shots!!! ;) :)

[Tim Marvin]

SPS is usually not bothered, but I have found caps to be very sensitive to zoo toxins. Seamat seems to be the worse.

[MikeyBoy]

I have not fragged anything lately..............it just started coming on like that.....

[Tim Marvin]

well, if you haven't fragged, and nothing is close enough to sting it here is what I'd do.
1. water change
2. Dip coral
3. Test all water parameters or have a LFS do it. Do you add iodine or anything?
4. Run carbon for a few days

[GaryP]

Make sure you aren't getting a build up detritus in the deeper sections of the Cap. I have had a similar problem with Caps. The bacterial decay taking place causes a localized area of poor water quality. I think its even worse in the larger, swirled caps because they get even less flow and detritus can accumulate there to an even greater degree.

[MikeyBoy]

Gary, I think you may be on to something......its the only swirled cap I have.

I have two other larger flat caps that seem to be doing great.....

I dipped it last night........
I do add iodine about every 14 days......about a cap full......Felipe said that stuff is VERY stong....

I have done water changes regularly....and good ones......
I will double check all the paramenters tonight or tommorrow and just triple check for any problems.....

Mike

[Tim Marvin]

You should not be adding iodine unless you can test for it. If you overdose iodine it can kill your whole tank, it is used as an antiseptic and will kill your bacteria also at the right strenght. Never add anything you don't test for. That may just be your problem. Unless you have a bunch of build up I doubt if that is your problem, because part of the white appears to be on a vertical surface. I have had small dots appear under particulate matter but as soon as you clean it off with some current the cap will regenerate in a few days, the looks too big for detritus to me.

[JimD]

Have you added any new coral recently? Especialy Montipora species. It really looks like the work of nudibranchs, look closely underneath the cap and see if you can find any localy colonised nudi clusters and or eggs. They should be fairly obvious if theyre there. About 1/8th inch long, eggs resemble very small white grains of rice, also, closly inspect other Montis in the system.

[MikeyBoy]

Would that Tech D lugols soulution killed then nudibranches??


It still seems to be spreading.......guess I will frag tommorrow..

Mike