Using live rock from older tank

[Bob Amirani]

Hi. I have a Ferplast Dubai 90 marine tank about 3 months old. I am going to change it to a new Ferplast Star 160. I have around 55 Kg of live rocks in the old tank. can I move these rocks to the new tank? What shall I do to get rid of the crabs ? I can put them in a the new refugium. Shall I wash up the rocks. Appreciate your comments.



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[melosu58]

What kind of crabs do you have. You can definitely add the LR straight to the other tank but I would not clean it as you will lose a lot of your nitrifying bacteria.

 

[54seaweed]

wouldn't wash them but I would dip in a bucket of tank water just to get excess crud off them , why wouldn't you transfer over the crabs great part of CUC

 

[Bob Amirani]

thank you for your advice . There are bunch of crabs and i do not feel very comfortable with them.. Sometimes i can hear some ugly click noises from the tank specially during the night. once i read somewhere it could be a pistol shrimp ... so I thought it might be a good idea to soak LR's in high salinity


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[54seaweed]

pistol shrimp are fine , but if its a mantis shrimp yes you want to remove him , see if you can track down the rock , why kill off all that good bb thats built up on the rocks

 

[54seaweed]

I keep tons of crabs , also have a lobster never had problem with either

 

[Bob Amirani]

Thanks a lot I will try to find out what is this creature. meanwhile I wonder does soaking LR in fresh water kill all those crabs or will be able to get most of them alive and put back the good ones in the tank?


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