Beware of getting a sea urchin!

Hi all just for your reference had a sea urchin for about 1 year now , was an ok kind of guy but after a few months with putting up with his
crappy habits got rid of him.
they will eat all of your corrline algea a mature system it will grow back .
thay will hassel all of your corals when they move around at night, i have stuck all of my coral down but he has managed to still moves some around.
If your live rock is not stuck together they will move it risking a piece to hit the front glass.
I have been thinking of the last few months to get rid of him, but when he broke my expensive war coral off the live rock that was it!!! his gone.
So if your tank has corals and you like the purple rocks stay away from these urchins they will only rack your head!
thank be to god his gone and i could get him out with no hassel.

Thanks for the tip!

How about anemones? Have you got one?

Ive been warned by several people about urchins and anenomys!!!
1 mate had an anenomy that ended up going thru his power head and poisoned the entire tank!!!
(It was a small tank)

yes some Sea urchins are not reef safe as they are like tractors they will rampage through the aquarium and knock things off, rocks, etc. In fact, some urchins can potential hurt/kill fish as well, not only fish such as jawfish or blennies but other non bottom dwelling fish. Also, if you have an acrylic tank it could damage the "glass" as well. So if you want to have urchins make sure your rocks are safely anchored to avoid nasty surprises!

There are a few out there that are less intrusive and more reef friendly like the tuxedo urchin, they might know off small frags but in general they will be ok. I have one of them in a small nano and it is doing fine (it doesnt bother anyone too much) although when it gets close to the elegance it does seem to bother it. Urchins dont really care about anything else in the tank, they are like a clumsy elephant and they will stop for no one.

Anemones are a different thing though. If you want to have an anemone on a coral tank it is advisable to place the anemone first and wait a while until it finds a spot it feels happy on, then wait for a few weeks and make sure it doesnt move, then you can star slowly placing corals. The problem with anemones is that if you do any works in the tank or change the flow/lights the anemone might start moving around stinging other corals. Remember that, unlike corals anemones move and their sting is in general, much more powerful than that of any coral! The other problem is that anemones requirements are different than those for corals, normally strong light and flow. Also, like hammie said, Anemones love flow, and therefore, powerheads! so is not un-common to see anemones commit suicide against your powerhead! .

So in conclusion, is it possible to keep anemones and corals, yes, advisable, well depends on your experience and your tank set up. On a big tank it will probably be ok, on a small tank, I wouldnt. With nano tanks you will have to chose either just corals or just an anemone. But that's my opinion of course.

Also, when anemones they will pollute the tank and they could potentially kill everything inside, on bigger tanks you might get away with it but on smaller tanks it could and probably will kill everything inside. Similar to what happens with the box fish