Learn new things.

[Joeganja]

I thought it be cool and educational if there was a thread for learning new facts and tips and advice.
Such as:

If you have a anemone and it dies in your tank then it nukes your tank and kills everything.

Comment any tips or faces that you think are interesting or facts we should know
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[Pete polyp]

A dead clam didn't kill anything in my tank.

 

[Trex]

Not sure about the anemone dying and it nuking your tank as being a fact.

I have had a couple die in my tanks over the years and didn't nuke my tank. The closest would be losing 2 fish after one got caught in a powerhead -- and I believe it was actually the release of all the stinging cells that did in the 2 fish.