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Old 04-16-2005, 12:03 PM   #11
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Well, dead about sums it up. That's why I don't think he starved. It happened all in about a week. I read in Dr. Shimeck's book (Marine Inverts) that hermit crabs can kill them by picking, especially on the small ones. Is that correct?
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Old 04-16-2005, 01:15 PM   #12
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Originally Posted by runway1
I have a 55 gal with mushrooms, some gold polyps of some kind (forgot), orange sponge, LT-plate coral
Are any of these close to or touching the brain?

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Chemistry is about 20 ppm nitrates, 450/460 Ca, 14 kH, 8.3/8.4 pH, SG was a bit high at 1.029. Lowered now to 1.026
The nitrates are a bit of a concern. You need to get those down below 10 ppm on a consitant basis. The chemistry is kinda high as well. You really should let that fall to a more NSW level. Elevating the chem above NSW serves no purpose and can actually do more harm than good. If you are using a swing arm hydrometer to measure your SG, I'd also let that fall towards 1.024. The hydrometer will most likely be reding innacruartely overall. Ph is good though..

Quote:
I did notice that my 6-line pecked at it a bit but I though that was after it died. Dunno. Nitrates were at 15 and have floated up to 20+. Not sure why
The sixline could be picking at parasitic hitchikers. You might want to gentley pick up the coral (wear gloves) and inspect it underwater. If recesion or necsrosis have set in, you really need to get those nitrates down. They will only make matters worse. Water changes will be needed on a more frequent basis in the meantime.

You did not mention the water flow the coral is in nor the placement within the tank. More often than not these kinds of issues are caused from direct/sustained flow on the coral, an irritant or coral warfare. Feeding will help it recover once the source of the problem is found and eliminated but it will not alleviate the problem.

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Old 04-16-2005, 01:19 PM   #13
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Originally Posted by midiman
Maybe I don't understand brains (I'm in the midst of the Borneman book right now), but I can see too many of the ridges of the coral skeleton for my tastes. Shouldn't it be "plump" when it's fully open? Are the ridges that radiate out from the center normally visible, or covered in flesh?
If the flesh is hugging the skelatal structure constantly there is something causing it. When the lights are on the coral should plump up quite a bit. High alkalinity, neighbourly irritants and water flow generally being the culprit.

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I notice that, at night, a ring aroung the center seems to curl up , exposing more fleahy material underneath- feeder tentacles?
Mesenterial filaments are used for "prey capture". More commonly seen at night but the longer the coral is in the tank the more common it will be to see them whenever the tank is fed.

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Old 04-16-2005, 09:47 PM   #14
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Yeah, steve. I noticed my numbers were high but I don't use any additives at all. The coral sat near the middle in a moderate flow area. i use a refractometer that I recalibrated twice because of the number I read so it's accurate.

I water change quite regularly - 5 gal every week without miss in my 55 gal (with 3 gal in the sump +2 in the fuge). My NO3 was 10-15 and then floated up; wonder why? Do you think the high SG may have done him in or a parasite I didn't catch?
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Old 04-18-2005, 05:06 PM   #15
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I water change quite regularly - 5 gal every week without miss in my 55 gal (with 3 gal in the sump +2 in the fuge). My NO3 was 10-15 and then floated up; wonder why?
Couldn't tell you without more info about the "before and after". New additions/changes etc...?

A 5 gallon water change won't do much to lower the nitrates either. It results in a 9% water change so you are only reducing the nitrates 2 ppm approx each week. If nothing new has been added, it could simpley be an accumulation if there no real denitrification in place.

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Do you think the high SG may have done him in or a parasite I didn't catch?
I doubt the salinity problem would cause this although it could stress the coral I doubt it would kill it. Parasites are always a possibility but unless you catch one in the act, it's just guess work.

You haven't indicated how long you've had it so it could have been a poor specimen from the start. Otherwise I would attribute it to a possible combination of events but nothing specific.

Cheers
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Old 04-18-2005, 11:04 PM   #16
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Thanks, Steve. You always offer good info. I've had the brain for only about two weeks. Before it opened to a healthy looking specimen, it had a "kink" in one side that (seemed to me) was just a typical fold/convolution found in brain corals.

In hindsight, maybe it was an injury or a parasite that I wasn't looking for. Anyhow, not enough info to make a conclusion. Thanks again.
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Old 04-19-2005, 10:12 PM   #17
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I had a brain that was doing good for a while before my keyhole all of a sudden decided he wanted to try some corals. Killed my brain before I could figure it out. He had to go to a FO tank. Maybe some of your fish are bothering it. Keep a close eye on it
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