Bilge pump for aeration!

Discussion in 'Power cuts' started by Helga, 6 May 2012.

  1. Helga

    Helga

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    Could this work?

    We are all aware of the potential problems when theres a power failure and you dont have back-up power!
    Going through the threads there are so many people in panick standing with spoons etc trying to aerate their tanks. Now I was thinking.... and please dont kill me for this. The small Bilge pumps we use on a boat to pump water out of the hull could work to aerate your tank. It is powered by a 12V battery. Hang the pump in your display tank or sump, with a outlet pipe into your DT. Lift it out of the water. The force of the water falling into the DT would help with adding oxygen.

    Any "negative" ideas :biggrin:;)
     
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  3. Tobes

    Tobes Retired Moderator

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    Helga, I used one as a back up return pump - this is what I did


    I connected both the 220V and 12V bilge pump on the same return line according to the pick. I used non-return valves but removed the springs as they rust. The bilge pump was connected to the deep cycle battery and a 220V relay was used as a switch. So when the power tripped, the 220V pump stopped and the 12V pump came in. The pressure opened the non-return valve closest to the bilge pump and closed the other non-return valve forcing the water into the return line. Now when the power comes on again, the 12V pump stops and the 220V pump comes in and the relevant valves are opened and closed. The electronic charger fills up the battery again for next time. This gave me 37 hrs :) - I chose a bilge pump of 3030lph as my return was 3000lph - it worked perfectly ;)


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    Last edited: 7 May 2012
  4. Tobes

    Tobes Retired Moderator

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    Forgot to add, if you have biological filtration in the sump like macro algae, a DSB or even live rock, I suggest a similar return type back up as they need the oxygen too. If you only have a skimmer in the sump, you can just use a bilge pump for aeration in the display. Although you get nice 12V flow pumps these days like the Tunze's - I would rather use one of them for display aeration only as the bilge pump might be a sore eye in there :p
     
  5. OP
    Helga

    Helga

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    Very good installation Tobes!
    I do have a back up system connected to my tank. 2 big deep cycle batteries connected to an pure sinewave inverter that runs my return pump and 2 vortech pumps. But I'm sure theres a lot of reefers that could do with that system.
    The thought just came to me while we were on the boat and we were using the bilge pump :lol:. My thought was as a "cheaper" emergency installation just to get air in you DT. I agree if someone wants to do a permanent installation there are most probably better ways of aerating the DT.
     
  6. caddy

    caddy

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    I hope you were not using it cause you were sinking :whistling:
     
  7. OP
    Helga

    Helga

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    Haha no.... thank goodness no!!!! We were on a bass boat... pumping from one live well to another...:)
     
  8. Clownfish9906

    Clownfish9906

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    good set up Tobes...
     
  9. Wes

    Wes

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    Nicely Done Tobes, did you import the pump?
     
  10. Electrician24

    Electrician24

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    You can buy it at any boat shop.
     
  11. Tobes

    Tobes Retired Moderator

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    I bought that one at a boat shop in PMB.
     
  12. RiaanP

    RiaanP Moderator

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    if you can, get the smaller one, still delivers 1900L/h.

    Just note, these pumps are not designed to work for extended periods. Cannot run them continuously.
     

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