trapping crabs in sps tank

[scfong8]

Dear Fellow Reefers,

Found two big 'bad' crabs in my sps tank recently. They have been eating away some of my sps.

Does anyone has workable methods of trapping or killing these crabs? The usual 'prawn in a bottle' method is not appropriate due to nitrate.

Thank you.

[jxlex]

I think the usual trap would be fine... Given a sps tank the biological filtration should already be able to manage this little addition..

[Kelvin81]

Buy a BBQ bit metal skewer. At night, switch odd the light arm with torch light. Use the skewer and poke it. Its work for me. I clear most of my crab using this method. Jappy poking.

[solasido]

Hi bro, Use fine fishing line. Make some ties with diameter large enough for the crab legs to get tangled. Fine Polyethylene line is not so visible to the crab. Ambush the crab, once it's position is open enough, use a long pincer to aim the fishing line to the crab legs. Crab tend to stay put to minimize movement to avoid being visible. This is an advantage as it gives us chance to round it's pincers or legs with the fishing line. Once it get entangled, hold fast the line to prevent it to escape. You can then use any tool to crush and kill it. It was how I managed to catch a gorilla crab that ate my sps. Sent from my iPad using Tapatalk HD