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Thread: Tank flow rate

  1. #1
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    Tank flow rate

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    Hi people. I had a new tank and i find that the flow rate is too fast. Any sugguestion to slow down the flow rate? I dont wan to buy any equitment.

    Etheim 2224 with a 2x2x1.5 tank. Sugguestion please.

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    Re: Tank flow rate

    push the output knob on the 2224 to a lower flowrate?
    Aspiring to be.

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    Re: Tank flow rate

    Any way is to use the rainbar and see how it is. If its still too fast, direct it towards the tank wall instead of out towards your tank.

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    Re: Tank flow rate

    use rainbar is the best solution. rainbar can be bought at any lfs cheap or diy by using pvc pipe.

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    Re: Tank flow rate

    Using the turn off valve located at both the inlet and outlet valve is ok only for temporary. Those valve are mainly used when you are doing maintenance on the canister. A extended rainbar might be better in long term and also positioning them correctly help distribute the flow across the tank.

    Aiming the rainbar slightly upwards towards the surface will somehow reduce the current rate and help aerate the surface which is a good thing as well. Depending on the angle , some people manage to position in a way that it provide aeration and minimizing co2 loss as well. Just have to experiment yourself
    Getting poison everyday

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    Re: Tank flow rate

    It actually includes a rainbar. I am using and somehow i think its too fast. Shall adjust it later. Anyway do i still need a additional air pump for my tank if i put the rainbar below the water level.

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    Re: Tank flow rate

    Actually the knobs are not meant to be used only during maintenance..the knobs are actually meant to adjust flowrates and just that it works to keep water in the pipes by completely shutting its' valve,which makes priming easier..the input knob should never be used to reduce flowrates because it might damage some component in there(i.e the motor)..you can only manipulate the output knob to adjust the flowrates..
    Last edited by reiner09; 7th Dec 2011 at 10:12.
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    Re: Tank flow rate

    eheim rainbar are small in size which cause more pressure going through and make the flowrate out big. Get a sponge to cover the rainbar and the flowrate will be lesser. another way is to make the rainbar holes bigger which allow more water to go through then the water go through would be slower.
    best alternative get a bigger rainbar.
    still learning the hard way!!

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    Re: Tank flow rate

    So the rain bar should put below water level? If so, do i need to get air pump? Because there will not be any bubble.

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    Re: Tank flow rate

    is it a planted tank ? if with live plants i guess there isnt a need to aerate the water. recommended thou ? i dont have an airpump and i place my rain bar under the water pointing upwards hahah looks like a fountain from the top.

    Low tech tank FTW!

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    Re: Tank flow rate

    I see. Well cool. Shall see how.

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    Quote Originally Posted by SeVenZ View Post
    is it a planted tank ? if with live plants i guess there isnt a need to aerate the water. recommended thou ? i dont have an airpump and i place my rain bar under the water pointing upwards hahah looks like a fountain from the top.
    His tank lightly planted.
    No co2, no liquid fert. (for now I believe )
    Learning the hardway, not the highway.
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    Re: Tank flow rate

    Quote Originally Posted by felix_fx2 View Post
    His tank lightly planted.
    No co2, no liquid fert. (for now I believe )
    icic .. is co2 necessary? and if i were to add one, whats the average price for a small tank ? a 2ftby1ft

    Low tech tank FTW!

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    I got a second hand tank for 80 with solenoid regulator. Top up from na if no gas should be $15
    still learning the hard way!!

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    Re: Tank flow rate

    Quote Originally Posted by Neondagger View Post
    I got a second hand tank for 80 with solenoid regulator. Top up from na if no gas should be $15
    but i want something with really little maintenance.. i guess the pl light i bought wasnt that good :/
    55watts is too high for a 55litre tank
    thats like 3.8 watts per gallon ..

    is there a way to reduce the power without changing light set?

    Low tech tank FTW!

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    Re: Tank flow rate




    Here's his tank... young kid can whatapp me but very shy in fourm...
    Learning the hardway, not the highway.
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  17. #17
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    Re: Tank flow rate

    Quote Originally Posted by felix_fx2 View Post



    Here's his tank... young kid can whatapp me but very shy in fourm...
    how do u control the flowrate of ur outlet? using the double tap valve?
    isnt that a bad idea? i mean the tap is only for maintenance right?

    Low tech tank FTW!

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    Re: Tank flow rate

    To me in theory yes it might shorten the lifespan of the pump or canister........ but alot of hobbist somehow overlook cause with high flow it is really causing a swirlpool in the tank.

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    Re: Tank flow rate

    From a 90 degree look. Try to aim just 5 degree downwards or slightly more if they dont cause any swirling etc. But not 45 degree direct hitting the front substrate.
    Getting poison everyday

  20. #20
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    Re: Tank flow rate

    Nope. I did not control the water flow. I add a little more water. The flow is good now.

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