New pond owner needs help

Discussion in 'Pond Archive' started by JGOverbeck, Mar 17, 2007.

  1. JGOverbeck

    JGOverbeck Guest

    We bought a house with a pond in central Texas. The pond is about13 feet by 7 feet and about 18 inches deep. We have a bunch of shubunkins - about 30 of various sizes. My question is how to keep enough oxygen in the water during the summer where temperatures can be in the 100s for many days. Do I use a pump, plants or ...? If a pump, what is the best inexpensive solar pump and how big a pump do I need? Our pond is a good distance from an electrical outlet and although, using an electric cord is not out of the question, I think we would prefer a solar pump. Any and all advice is welcomed. We just want the fish to be happy!


    JGOverbeck, Mar 17, 2007
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  2. JGOverbeck

    Kurt Guest

    My pond's a tad smaller with about the same amount of fish. Plants are
    important. Protects the fish from hot sun and competition keeps algae in
    check. Water Hyacinth are very good since roots help filter water.
    I'd look into doing a veggie filter for filtration. Google this. Don't
    know how much you feed your fish, but they can poop a lot. 30 quite a
    I have a 1250 GPH in mine. Given my messy fish, I'm considering bumping
    it up. I've got a bio-filter in my pond, I also have an external filter
    (not great).
    Kurt, Mar 23, 2007
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  3. JGOverbeck

    Kurt Guest

    Actually, I would spend some time going through posts in this group.
    Lots of good information.
    As to your solar solution,
    Not having any direct experience, I think you'd just need to find one
    that can power your pump and store enough power to keep it going at
    night and cloudy days. You can always run a line underground through PVC
    to an outlet onsite.
    This is what I do.
    Kurt, Mar 23, 2007
  4. You are right in your concerns. Warm water dosn't hold as much oxygen as
    cold water. Some fish can't live in warm water for that reason. The
    most efficient ways to add oxygen are underwater green oxygenator plants
    and an oxygenation system with an air pump. I have a huge air pump and
    it only draws 40 watts. You will be able to find a smaller pump that
    could be fun from solar power. Fortunately the more sun there is the
    more oxygen you need and the more power you will have. The aerator
    heads should be of a shower head design and placed in the deepest part
    of the pond. Air stones tend to clog up when used too long. They are
    OK if you can monitor them. I like my aeration heads because they are
    trouble free. I bubble the air through barley straw to keep algae down.
    Since you apparently don't have a water pump, you will need lots of
    marginal plants as well as the submerged oxygenator plants.
    Stephen Henning, Mar 23, 2007
  5. JGOverbeck

    ~ jan Guest

    Since this thread is talking about airstones/pumps, I thought I'd add that
    one can make a cheap air stone with some of that leaky hose for drip
    irrigation. ~ jan
    ~ jan, Mar 23, 2007
  6. JGOverbeck

    Kurt Guest

    Better than airstones are to add a venturi to the pump. I found a guy
    online who made these. Bought from him 3 years ago. No longer seems to
    be selling or maintaining a website. You can access his web old pages by
    going to:

    and then putting in:

    Go to 2003 (or any year) archives and see if you can find his pages on
    venturi aeration.
    Kurt, Mar 23, 2007
  7. JGOverbeck

    drsolo Guest

    they arent nearly as energy efficient as an air pump for air stones. I like
    having the pump and aeration in separate devices so that if one quits the
    other is still working. Ingrid

    "Kurt" wrote in message
    drsolo, Mar 23, 2007
  8. JGOverbeck

    Kurt Guest

    Same energy as a pump, except you get both in one.
    I have a backup aerator in case of failure (I used it for my "fish
    motel"), but my fish would last the time it took me to replace the pump.
    Kurt, Mar 24, 2007
  9. JGOverbeck

    drsolo Guest

    adding a venturi onto the pump decreases the efficiency of the pump by a
    greater factor than running a separate air pump. Ingrid

    "Kurt" wrote in message
    drsolo, Mar 24, 2007
  10. JGOverbeck

    Kurt Guest

    Only because you channel some of the pump's output to the venturi. In my
    experience, you don't need to divert much through the venturi to get the
    right bubbles. My venturi is adjustable through a valve on top where
    surface air is pulled down. I don't notice a huge difference in the
    output that goes to my waterfall and the pump is still pulling the same
    amount of water through the bio-filter I have attached to it.
    Kurt, Mar 24, 2007
  11. It depends upon whether you have a water pump already. A venturi is
    pipe with a hole in it. When the pipe has water flow through it, it
    creates a vacuum in the hole due to the venturi principle.

    With a water pump you flow the water through the venturi and suck air
    into it. Its work on the same principle as the aerator on the faucet in
    the kitchen sink or bathroom sink.

    If you don't need to pump water then a water pump is unnecessary. In an
    air stone you are pumping air, not water. Air is very cheap to pump.
    Air is what you want in the water. You don't need a venturi. What is
    better than an air-stone is a aeration diffuser head.

    If you do need to pump water, then a water fall or fountain or venturi
    are alternatives to an air pump and air-stone or aeration diffuser head.
    Stephen Henning, Mar 24, 2007
  12. 40 watts in an air pump is huge. 40 watts in a water pump is piddling.
    No comparison. Look at it this way, if you want 1% air in the water,
    you have to pump 100 gallons of water for every gallon of air. That is
    at least 100 times as expensive. If you are already pumping 100 gallons
    of water, then that is a different matter. However some people shut
    their water pumps off in winter. There is not reason to shut off an air
    pump and in fact it will keep the pond fresh with a hole in the ice
    cover in winter.
    Stephen Henning, Mar 24, 2007
  13. The drip hose floats and the pumped air squirts into the atmospherw not
    the pond. What do you use to keep the drip hose sunk?
    Stephen Henning, Mar 24, 2007
  14. It's true this is the best way to add aeration, but in winter when I don't
    want to run a pump (and the O2 content of the water is not a huge issue),
    that's a major difference in energy consumption over an airstone and a 15W
    Derek Broughton, Mar 24, 2007
  15. JGOverbeck

    Kurt Guest

    The nice thing about my venturi setup is that I can control both the air
    and the water output. I can hut the venturi down to very little output.
    100 times expensive sounds huge until you look at real energy costs. All
    this, of course, is providing that you use a pump in your pond.
    Kurt, Mar 24, 2007
  16. JGOverbeck

    ~ jan Guest

    Let's add another little tidbit here. The importance of your filter getting
    O2 (oxygen).

    If one is having water quality issues, sometimes air added to the filter
    makes the bacteria grow and therefore work better. ~ jan
    ~ jan, Mar 24, 2007
  17. JGOverbeck

    ~ jan Guest

    It's called hi-tech.... a rock. ;-)

    Actually I don't use them in my pond, though my son has used it at times in
    aquariums, he used the gravel to hold it down. We did use a loop in the
    D.pond one winter, we used a hi-tech heavy-0ld-sprinkler. ;-) I decided the
    bubbles were too fine, so the last 2 winters we've done open tubing which
    makes the bubbles boil the surface. More effective. ~ jan
    ~ jan, Mar 24, 2007
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