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Thread: one filter for 2 seperated tanks? Can work?

  1. #1
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    one filter for 2 seperated tanks? Can work?

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    Can I used one ehiem 2028 for 2 seperated 2 ftt tank? how can i conect them. can i split to 2 inlet and 2 outlet to spearate tanks? thanks

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    No. It will be a safety hazzard. If one of the inlet/outlet is clogged, the other tank will overflow and flood your house.

    Buy a cheap internal filter for your other tank or consider one of the China made cannister filter.

    The potential damage and hassle is not worth it.

    Cheers,
    I have dwarf cichlids in my tanks! Do you?

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    Actually, you can do that but the Achilles heel is your 2028. Too fast flow for a 2footer. You need an external overflow box/pipe and your tank need to be on a 2 tier rack. The top tank must have this overflow thingy and also the output tube of the canister filter. From the overflow,the water travel down the tube into the 2nd tank. This 2nd tank should have the inlet tube of the canister filter. Get it?
    If you've learnt, teach, if you have, give.
    Don't walk behind me as I might not lead, don't walk in front of me as I might not follow. Walk beside me, as my friend.
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    Hmmm, thanks guys for your expert view. I kind of agree with benny flooding problem. I guess i have to have one 4 ft with divider in between than 2 seperated 2ft tank.

    But any of Bro try before?

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    Here you go!

    http://www.rva.jp/shop/rayon/of_kakaku.html

    http://www.rva.jp/shop/rayon/of_e.html


    I have always wanted to have 1. There's no need to copy to exact dimension if you thinking of creating one. Hope this helps!
    Last edited by BFG; 30th Jul 2005 at 00:06.
    If you've learnt, teach, if you have, give.
    Don't walk behind me as I might not lead, don't walk in front of me as I might not follow. Walk beside me, as my friend.
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    [QUOTE=benny]No. It will be a safety hazzard. If one of the inlet/outlet is clogged, the other tank will overflow and flood your house.

    I presume you're refering to the inlet/outlet hose? Normally it is the canister filter that cloggs up not the inlet/outlet hose, so it shouldn't cause the overflow to the other tank since if it cloggs up it will be both tanks not one. Just wash the sponge and media inside the filter and it should work fine.

    Actually i've seen eheim connectors for splitting the hose up. Which means eheim probably intended it to be able to split the hose up and in this case into two tanks with both tanks being placed at the same height and having the same length, width, height and water level. Theoratically it shouldn't have any problems.

    But during the recent Aquarama where they had a demonstration of the new professional 3 series, the inlet and outlet of the filter is split into two tanks of the same size and water level. The person doing the demonstration said that you can't do that cos they found that water in one of the tanks is lesser after they run the filter for a day.

    Frankly i'm puzzled how it could be so???

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    The Eheim canister filter is created for a single tank. There's no 'smart' controlling point to control the water volume if you want to use for 2 tanks. But there is a way to bend the rule if you want to use 2 tank or more.

    To use multiple tank, you need to stack the tank into multiple tier. You can't use a canister for 2 tank that is placed side by side on the same level. It need something to control the water volume for each tank. The last tank on the bottom of the tier will be the deciding factor for the volume of water. It will show you how much water is lost through evaporation while the other tank on top of it has the same water volume always.

    The split connector was intended to split the output hose ( I presume ).
    If you've learnt, teach, if you have, give.
    Don't walk behind me as I might not lead, don't walk in front of me as I might not follow. Walk beside me, as my friend.
    Mohamad Rohaizal is my name. If it's too hard, use BFG. I don't mind.

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    it's really an eye opener for me! thanks guys for suggestion. agree - placing side by side have risk of one tank over flowing.

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    I would think cross contamination of the tanks would be a pretty bad thing to happen too... Should the animals in one tank fall ill, it's a definite that inhabitants of the other tank are going to be infected as well... It's just not a very good idea to have a shared filter.

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    Joestoys, this is what you need to transfer water from 1 tank to another.

    http://www.sgreefclub.com/forum/inde...howtopic=25219

    Hope this helps!
    If you've learnt, teach, if you have, give.
    Don't walk behind me as I might not lead, don't walk in front of me as I might not follow. Walk beside me, as my friend.
    Mohamad Rohaizal is my name. If it's too hard, use BFG. I don't mind.

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    my opinion: all the tubes etc are fricking ugly..

    stick with 2 eheim liberties (the largest ones) if you don't have room for a canister.

  12. #12
    Quote Originally Posted by joestoys
    Can I used one ehiem 2028 for 2 seperated 2 ftt tank? how can i conect them. can i split to 2 inlet and 2 outlet to spearate tanks? thanks
    technically speaking yes you can do that, just get a three way valve and it would solve ur problem.

    but then i'm worry bout cross contamination from the tanks, one down everything down.

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    Actually it's of breeding tank, if i going to have 4 tanks of 2ft but do not wish to use those overhead filter ( prefer canister) which think of using 2 tanks to a canister. Also when tranfering the fish from tank to tank i think it's easier for the fish to adjust to the water if it's from the same source filter. but again on the of water contamination- that's other concern.

    eheim liberties - are they hang on filters? never used them before as more of my canister are 2026, 2028.

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    Quote Originally Posted by BFG
    The Eheim canister filter is created for a single tank. There's no 'smart' controlling point to control the water volume if you want to use for 2 tanks. But there is a way to bend the rule if you want to use 2 tank or more.

    To use multiple tank, you need to stack the tank into multiple tier. You can't use a canister for 2 tank that is placed side by side on the same level. It need something to control the water volume for each tank. The last tank on the bottom of the tier will be the deciding factor for the volume of water. It will show you how much water is lost through evaporation while the other tank on top of it has the same water volume always.

    The split connector was intended to split the output hose ( I presume ).
    1. Maybe i'll elaborate further on my point when i say that theoratically it should be ok to use split connectors for two tanks.
    Eg i) Assuming you have a 4 ft tank and instead of using one inlet/outlet hose, you use a split connector on both the inlet and outlet hose with the canister below the tank, the water level in the tank will be the same right?
    ii) Now if you have two 2 ft tanks with the same L x W x H, same water level and both are placed on the same height won't the results or effect be the same as eg i since the total vol of water from the two tanks will come up to be the "same" as one 4ft tank? The only difference is that 2 tanks = extra glass and silicone.

    2. Even if there is any evaporation, the two 2ft tanks should have the same rate of evaporation and not have different water levels after a few days since the water surface is the same for both tanks and assuming you don't agitate the water surface with the spray bar for both tanks.

    3. You don't need The "smart" controlling point to control the water vol cos the inflow and outflow of water is determined by the pump on the canister filter so the water level should stay the same for both the 2ft tanks.

    Has any body ever tried this b4? Care to share or add-on your views?
    Last edited by aquarius; 1st Aug 2005 at 05:19.

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    Quote Originally Posted by joestoys
    Actually it's of breeding tank, if i going to have 4 tanks of 2ft but do not wish to use those overhead filter ( prefer canister) which think of using 2 tanks to a canister. Also when tranfering the fish from tank to tank i think it's easier for the fish to adjust to the water if it's from the same source filter. but again on the of water contamination- that's other concern.

    eheim liberties - are they hang on filters? never used them before as more of my canister are 2026, 2028.
    They are hang ons. I think people should not be too concern with contamination cos if you change water regularly and don't feel live food which is not disinfected with potassium permanganate then you'll not have much of a disease problem.
    For me Good water parameters is even more important during the monsoon season cos the water temperature is much lower which will more likely cause a disease outbreak like white spots. Practice good husbandary and you'll be rewarded with HEALTHY and LIVELY fishes.

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    Quote Originally Posted by aquarius
    1. Maybe i'll elaborate further on my point when i say that theoratically it should be ok to use split connectors for two tanks.
    Eg i) Assuming you have a 4 ft tank and instead of using one inlet/outlet hose, you use a split connector on both the inlet and outlet hose with the canister below the tank, the water level in the tank will be the same right?
    ii) Now if you have two 2 ft tanks with the same L x W x H, same water level and both are placed on the same height won't the results or effect be the same as eg i since the total vol of water from the two tanks will come up to be the "same" as one 4ft tank? The only difference is that 2 tanks = extra glass and silicone.

    2. Even if there is any evaporation, the two 2ft tanks should have the same rate of evaporation and not have different water levels after a few days since the water surface is the same for both tanks and assuming you don't agitate the water surface with the spray bar for both tanks.

    3. You don't need The "smart" controlling point to control the water vol cos the inflow and outflow of water is determined by the pump on the canister filter so the water level should stay the same for both the 2ft tanks.

    Has any body ever tried this b4? Care to share or add-on your views?
    1i)Yes
    ii) The problem is time and consistency. The canister will be pulling in the same amount of volume of water from the 2 tank together. That is it's consistency, but as time goes by, the amount of water from 1 tank being suck in will be different from the 2nd tank. I do not know why but maybe the way the tubing is being setup may not be of equal length or that they may be some sort of 'restriction' being formed from 1 set of tubing from the other set. This is for the intake tube. For the output tubes, the water that flow toward the tee section may not flow equally to the 2 tanks. This is another reason why the 2 tank may not equal in water volume.
    If you've learnt, teach, if you have, give.
    Don't walk behind me as I might not lead, don't walk in front of me as I might not follow. Walk beside me, as my friend.
    Mohamad Rohaizal is my name. If it's too hard, use BFG. I don't mind.

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    That was a GOOD explaination! I ever ask reputable lfs owners b4 cos i ever thought of connecting the filter to two tanks but they have never given me a good explaination that's why until today i didn't go ahead with it. Don't want to K Khiang and it looks like i did the right thing.

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