L..blenny or emerald crab

Discussion in 'General Discussions and Advice' started by Robert., 18 Apr 2011.

  1. Robert.

    Robert.

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    Hi, im still a bit new to this reef thing:blush: so i just want to ask a question.

    I have a 12 gallon tank, with 1 clown and 1 cardinal and a shrimp, i have recently seen some long hair algae growing out my rocks, so i did some research.

    some people say the emerald crab will tear up the algea.. some say they arnt even worth the cost and that they just hide under a rock all day.

    while the lawnmower blennie seems to think the stuff is crack or weed.. and eats it pretty quickly:biggrin:.

    but my problem is the size of my tank:( is it ok to keep LMB in a 12 gallon? ive seen many people that do.. but not sure so i thought i should ask
     
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  3. butcherman

    butcherman Moderator MASA Contributor

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    how old is your tank? GHA(green hair algae) can occur just after cycling, you need to find out whats causing it. Do you do regular water changes?
     
  4. gaboon

    gaboon

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    Welcome, find the source of the algae first, how long has the tank been running? Have you checked your nitrates and phosphates? How often are you doing waterchanges? I assume you dont have a skimmer.

    Sorry for all the questions:p
     
  5. butcherman

    butcherman Moderator MASA Contributor

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    oh and Welcome to MASA Robert. :thumbup:
     
  6. RiaanP

    RiaanP Moderator

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    Hello and Welcome here Robert.

    Yeah, on 12 Gallon, that's like 45L Nano tank. I doubt if Lawnmower Blennie could be sustained successfully. Unless you help daily with nori.

    Why not update your info and let us know from where you are?
     
  7. Tobes

    Tobes Retired Moderator

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    Welcome to MASA. Seeing that you're new to the hobby, read the link in my signature for some great info on starting a marine tank ;)
    On the blenny, I read that a 1,2m (4ft) tank is recommended.
     
  8. Robert.

    Robert. Thread Starter

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    thanks 4 replies:)

    My tank has been running for about a year and a half but i had to divert my attention due to other causes...so i think it is just the past signs of neglet:(

    Umm yes im gonna take a sample of water to my LFS as he said he would test it.
    As for filtration... im planning on doing a refugeium with a ATS tomorrow, seeing that theres only gonna be fish in this tank, is a skimmer needed?

    the hair algae is a bit of a mix, it is mostly brownish with a green shade and looks like fuzz. But in one corner ive seen some black spots of algae?

    ill ditch the blenny as its wellbeing comes first:), is their any replacement? _(ive tried turbo snails, they do an awsome job but they stay away from the long stuff):(

    BTW the info on this site is very helpful:thumbup: (thnx Tobes)
     
  9. gaboon

    gaboon

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    Manually remove as much as possible, then the snails will get to the short stuff. Also use a small powerhead to blow detritus out the rock, that could be fueling it.
     
  10. Robert.

    Robert. Thread Starter

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    ive tried also using a old tooth brush, that seems to do the trick :) followed with a powerhead over the rock. Once my tank looks respectable ill post some pics:yeahdude:
     
  11. Robert.

    Robert. Thread Starter

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    Sorry for double post:blush: but when i have my refugeium set up, must i run it as its own system for a while so that the Lr can cycle? or can i just link it straight away?
     
  12. Evo R

    Evo R

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    :welcometomasa2:
     
  13. viper357

    viper357 Admin MASA Contributor

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    Welcome to the forum. Emerald crabs, in my experience are more favoured for eating bubble algae, I'm not sure if they eat normal filamentous green hair algae, maybe if it is short enough and there is no other algae in the tank then they might have a go. Buy one anyway, they are awesome little creatures and will just do their own thing in the tank.
     
  14. Donovan

    Donovan

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    welcome to a world of advice
     
  15. Robert.

    Robert. Thread Starter

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    Ok ill just do some more reserch on the little guy:) then ill see how it goes!!!:yeahdude:
    BTW can old lights influence the growth of algae? if so.. WHY?:)
     
  16. viper357

    viper357 Admin MASA Contributor

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    Yes, because the spectrum of the light changes to a lower kelvin rating which encourages algae growth. I have experienced this with putting 6500k globes on a propagation tank linked up to my main tank, no algae at all in the main tank, but the frag tank with the 6500k lights was a full blown algae farm. No comments from the peanut gallery please. :p
     
  17. crispin

    crispin

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    the gallery is clamouring for a comment on that topic viper :)
     
  18. viper357

    viper357 Admin MASA Contributor

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    lol, leave my algae tanks alone, green is my favourite colour anyway :p
     
  19. mandarinman

    mandarinman

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    have two emerald crabs in my nano dont seem to eat much cos they so small, but a toothbrush will work well if you can get into the right areas. lawnmower blenny will starve in two weeks once algae gone
     
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