Do fishes like strong current?

Discussion in 'New To The Hobby' started by yheartsp, Sep 10, 2009.

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  1. yheartsp

    yheartsp Purple Spiny Lobster

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    i have a 190 tank and have 3 circulations in it,

    the first is 5000litre per hour return , second is 4600litre per hour wavemaker and third is 3000litre per hour chiller return. All are at the right side of the tank, my fishes seem to have trouble swimming? like struggling and stuff? :confused:
     
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  3. steve wright

    steve wright Super Moderator

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    190 gallon tank? yheartsp or 190 litre?
    your signature is showing the 22 gallon, hence my question

    You cant have to much flow, you can have to much flow in the same direction IMO
    if its a 190 gallon tank - your total water flow is 3150 gallons ( LPH divided by 4 for US gallons) = so you only have 16.5 times the tank volume - which most people would agree is in no way excessive

    if its 190 litre tank (47.5 US gallons) - then you would have 66 x the volume of the tank in flow and that would be above the normally considered amount (Unless its an SPS dominant tank )

    I bet if you moved the wave maker to the other end - your fishes would not struggle anymore, assuming its a 190 gallon tank

    Steve
     
  4. yheartsp

    yheartsp Purple Spiny Lobster

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    hmm the cable's not long enough to move the powerhead to the other side, but i'll try to change it's direction :)

    I wonder if they like it? the fishes and the strong current? is it like the ocean ;D

    anyway it's a 190 gallon, not litre , just got it weeks ago ;D

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  5. steve wright

    steve wright Super Moderator

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    Its awesome - well done on that Yheartsp

    now its confirmed as 190 gallon - I think more flow would be ideal
    no need to move what you have
    my clowns like to surf my 5000 LPH Sum Sum wavemaker and my fireball angel in my 60 fights its way to the same wave maker to peck any algae of it.

    in a 190 - they are going to get used to that and then you can add more.

    Steve
     
  6. yheartsp

    yheartsp Purple Spiny Lobster

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    haha what clowns do you have? i love clownfishes..

    how many fishes do you think i can keep in my tank? fishes that range from 3 inch to 6 inch i mean. ;D
     
  7. steve wright

    steve wright Super Moderator

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    yheartsp - I have a pair of Ocellaris about 1 inch for the smaller 1 and maybe 1.25 inch the bigger one

    for your 190
    a good general rule of thumb is 1 inch of fish to every 4 gallons of saltwater
    so you can have 47 inches of fish in that tank (give or take depending in filtration capabilities)

    allow for potential adult sise of fish when selecting and stocking , so you dont overstock or end up badly overstocked as they grow

    Steve
     
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  9. yheartsp

    yheartsp Purple Spiny Lobster

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    hi

    i transfered my corals 2 days ago and i feel that the flow is too strong on the sand bed, my yumas can't open up fully ! so i'm wondering how i should position my koralia 4 powerhead for optimum circulation, i only have softies and LPS..

    right now , my tank is a 5 feet x 2 feet x 2.5 feet. i have 3 outputs, 2 is at top right of the tank, at the overflow teeth. one output is the 5000litre per hour return pump facing left and another is the chiller return ( 3000 litre per hour ) facing front. i'm wondering where to point the koralia 4 ( 4600 litre per hour ) ;D
     
  10. steve wright

    steve wright Super Moderator

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    Yheartsp
    If its located where it seems to be in the picture- I would probably move it up a few inches and have it pointed just accross the surface - they have a very wide spread flow IME (clones do anyway) and if they are placed to low on the side walls you can get sand kicked up by them

    You need a tank thread now , on the show off your fish tank section!
    I would like to see how the tank looks, as would others

    Steve
     
  11. Daniel072

    Daniel072 Giant Squid

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    put as much flow as you can in there without stirring the sand bed up. I honestly think flow is one of the most important keys to keeping a tank. I have about 60 times turnover at the moment in my 150 and I never see a fish get whipped by the current. they really seem to love it. My rock stays nice and clean too
     
  12. ReefSparky

    ReefSparky Super Moderator

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    I think fish absolutely love current. Have you ever seen fish getting right "into" the flow of a powerhead and exersizing? Mine do it often, and I've seen the same phenomenon in many tanks.

    Ever hear of a slurp gun? It's a device used by divers to catch fish. It looks like a huge hypodermic needle, sans the needle. The opening is about 4" or so in diameter, and there's a long plunger that's used to first shoot water at the fish. The principle is, shoot towards the fish, they align their body with the flow, swimming directly at it, and once the plunger is fully depressed, you SLURP, or suck the fish into the chamber and viola. .. it's caught. I'd think if fish didn't enjoy current, these devices wouldn't work, and the fish would probably avoid the powerheads in your tank.