Crabs, salt, and live rock

Discussion in 'New Members' started by rudivh, 15 Apr 2010.

  1. rudivh

    rudivh

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    Hey there. I bought a new tank last weekend, and i put all the water and salt and stuff in. The guy at the shop told me that once the salt is right, i can put some live rock in so speed up the process of the water.

    Can anyone tell me firstly what the price for rock is, as he charges like R250 per kg for fegi rock. It is prettier than the normal rock, don't know what their called.

    Well anyway i bought some of it, and later when i put it into the water i noticed there are a small crab in the water. Haven't seen him since, guess he is in the rock someware. Is this normal and should i worry about it?

    Thank you
     
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  3. rudivh

    rudivh Thread Starter

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    O yeah and how long before the skimmer start working like making the foamy stuff? I'm just scared it is not placed properly or something...
     
  4. Tobes

    Tobes Retired Moderator

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    For starters, read the link in my signature - starting a marine tank - there you'll find all the info regarding the cycle of a tank with live rock ;)
    I also suggest using our sponsors like Dorry Pets, also in PTA.
    Please don't put any livestock in the tank until fully cycled as per the link, otherwise they might die from ammonia poisoning.
    The crab is a hitch hiker, it might not be reef friendly. Can you post pictures of the tank, sump and the crab?
    If you want to catch him, put a small glass against the live rock with a piece of fish or prawn in. He will climb in to get it but cannot climb out. Don't flush the crab in the loo, rather wait and hear if someone else wants him, either as a pet or as food for his mantis shrimp.
     
    Last edited: 15 Apr 2010
  5. Tobes

    Tobes Retired Moderator

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    The skimmer will take a while to "break in" and it will not make foam when you have very low or no bio-load ;)
     
  6. rudivh

    rudivh Thread Starter

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    I read the think about the crab, but the whole tank is under water so how an i gonna catch him now?wont he just swim out of the glass?
     
  7. Tobes

    Tobes Retired Moderator

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    Crabs don't swim, they walk :)
     
  8. Tobes

    Tobes Retired Moderator

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  9. Keanan

    Keanan 2time

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    Hi and welcome to MASA.

    Like Tobes said do lots of reading. Do you have any pics of your setup for us, we here at MASA just love pics.:biggrin:
     
  10. PeterL

    PeterL

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    Howzit Rudivh, check out my thread as noted below, I also had a thing about a crab. Considering you don't have any fish, this will be very easy to sort out. As mentioned above, put a glass in the water near where you saw him, had the glass tilted and with some food in it - in my case I just used fish food but a piece of shrimp or fish (just like what you get in the fresh fish dept @ Pick 'n Pay). Notice in my pic I used a whiskey glass and got a 2-for-1 by catching my hermit crab too, crabs only walk and the inside of the glass is too slippery for them to get out. I just took my hermit out and then sumped the other crab - i have identified him as a light brown hairy crab, AKA, Teddy Crab.

    It is very difficult to spot but look on the left of the hermit - you can make it out, only just but he is there...

    http://www.marineaquariumsa.com/showthread.php?t=16570

    [​IMG]
     
  11. rudivh

    rudivh Thread Starter

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    What does the crab do in the water and why cant i just leave him there? Also what does he eat as i dont put any food in at the moment and probably wont for the next month till i can start putting fish in the tank.
     
  12. Tremayn

    Tremayn

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    its better to catch the crab now and maybe keep him in the sump because later the crab could become a problem. It could be aggressive
     
  13. rudivh

    rudivh Thread Starter

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    Sorry, but i am afrikaans, what is a sump that youre talking about and how do i even know the crab is not ok to be there?
     
  14. Tobes

    Tobes Retired Moderator

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    'n Sump is a extra tank onder jou hoof tank en daarin sit 'n mens die protein skimmer, jou heater, 'n diep sand bed, en 'n pomp wat terug pomp tank toe. Jou hoof tank moet 'n overflow he sodat die water kan oorloop sump toe. Kyk 'n bietjie in die "members systems and setups" forum en sien hoe die meeste ouens dit doen.
    Die krap kan dalk later jou korale eet of jou shrimps as jy het en selfs jou visse. 'n Mens weet nie hoe aggresief hulle kan wees nie.

    For the english people - I basically explained to him what a sump is and how it works and also that the crab kan eat his corals, shrimps or even fish as we don't always know how aggressive they can be.

    Here is a picture of a basic sump and a tank on top

    [​IMG]

    The sump on my previous setup when it was still new in the beginning

    [​IMG]

    Another pic of a sump

    [​IMG]
     
  15. rudivh

    rudivh Thread Starter

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    O ok thank you very much. But i only have a small Boyu TS550 tank so the protien skimmer and everything is in the back compartment of the tank........
     
  16. Jacojs

    Jacojs

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    Hi Rudi.

    I sent you a private message with a question I have, please check and reply asap.

    Jaco.
     
  17. crispin

    crispin

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    hello rudi and welcome to masa:)
     
  18. jacquesb

    jacquesb Retired Moderator

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    A very WARM WELCOME to MASA, Rudi! Great to have on-board!
     
  19. LifeAquatic

    LifeAquatic

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    Welcome to MASA
     
  20. MistaOrange

    MistaOrange

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    welcometomasa
     
  21. Tremayn

    Tremayn

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    ahh.. not having a sump does complicate matters now...
     
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