What causes corals to melt?

[mansiz]

Hi bros, I'm wondering what causes LPS corals like (octo, hammer, bubbles, torch) to melt away? Because most of the time when someone ask about why their corals melt off, they would get the reply of brown jelly diseases. But what could be some of the possible reasons that corals melt off? I know that it could be due to certain factors, like PH, NO3, PO4. Are there other factors that causes it? For lighting I think the most it will cause them to bleach right? Hope to get some points here so that we could forcus on that factors instead of letting them die off one after another.

[xersion]

i believe too strong flow will also cost it to melt

[Alvin Tan]

n high calcium level...too strong lightings may also be the cause..

[nakazoru]

They melt bcos they die mah...

101 reason...

Common in order:

1. Water parameters -> Stress -> melt

2. Sting -> Sure melt depending on what coral sting

3. Flow -> Bleach first -> Slowly melt over time, maybe 1 week

4. Light -> Bleach first -> Slowly melt over time

5. Temp -> Depending on how high temp -> may be instant...

6. Brown Jelly Disease -> If water good, very little chance to melt...

[cowgum]

From my experience, the common problems are change in temp and low KH.

[letdoit]

no coral food. i have all parameter correct. but i didn't know that coral have own liquid food. LOL. i have bad first started

[toyboyhouse]

coral'melt' is refer as distingeration of its cyto skeleton in science. Most probbaly because they are subjected to stress which also cause the immune system to become weaker that result in bacterial infections

thnks

[lazydevil]

i am just curious, say if part of the coral melt do they have a 2nd chance of "growing back" ?

[mjck]

Also don't forget the most important salinity. Most of us go out and buy a refractometer and swear by it to give us accurate reading. Happened to me and was running my tank at 1.031 for long time. Although it did not cause massive die off but a third of my new additions didn't make it. Turn out that my refractometer is out and cannot be cal properly.

With regards to calibration, most will want you to cal using di/ro or distilled water at 20degrees. Firstly, a stable 20 degree is not easy to achieve at home. Second, if you are given a choice of a one point calibration, sg of 1.000 is far away from our target measurement of 1.026. Engineering will tell you that if a one point cal is the only choice, you will do it at the point of the target measurement. Even if your meter's span is out, it will still be accurate at sg 1.026.

Now I am only using a salinity standard solution to cal my refractometer. Pinpoint do have one that is 1.026. With this you will not require 20 degree room temperature and can be performed at room temperature.

[bubblefish000]

bro wer u buy the pinpoint solution and hw much

[mjck]

bro wer u buy the pinpoint solution and hw much

Madpetz have .. Check with them