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Old 25-06-2004, 05:11 PM
D Kat
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Default Selecting an efficent pond pump

Lava rock is extremely (I really mean EXTREMELY LIGHT - it floats). It also
has a great deal more surface area than just about anything. I'm 56, 5'2",
1__ - well never mind the weight - and have no problem dealing with pulling
the bucket and all out of the pond. The only weight to the bucket is really
the water and the pump. The water can be poured out as it is lifted out. I
never thought to use a crate but that would be even easier to pull out given
that the water is displaced by air as you lift it out of the pond. The
bucket works because the draw is from the bottom of the bucket and this
pulls the water through the lava rock making for a nice bio filter...

"Newbie Bill" wrote in message
I indeed have read numerous references to filling a 5 gal bucket or milk
crate with pea gravel or lava rock. I tried the milk crate with pea

for a while and found even that very difficult pull out of the pond. In
that I am pretty sure most of you lift 12 oz much more often than what

lbs dead weight, how do you manage this?
Weakling in Austin
Bill Brister

"D Kat" wrote in message
I hesitate to post this again after just being made fun of for my

it continuously but it really does work for me. I had the same issue

not being able to deal with the cleaning of the prefilter all of the

was about to just fill in the pond because of the twice a week clean

this system needed). Someone else posted in here about putting a pump

bucket filled with lava rock. This acts both as a bio filter and as a
prefilter to the pump. I only clean mine out about once a year and I

been using this method for some time now. I had been using a waterfall

which is not picky about being prefiltered but when the cord was damaged

fell back on my old pump that had needed prefiltering and it has been
working fine.

"Pat" wrote in message
news[email protected]_s53...
"grubber" wrote in message
"Pat" wrote in message
news:[email protected]_s51...
Hi all,

I would like to select an efficient (submersible) pond pump for

(capable of 1200 gph at 4ft head). Unfortunately, most pump specs

a single "power consumption" value without specifying what flow

that occurs at. What I really need is a power consumption vs.

head) curve so I can determine the power consumption at my

conditions. Is there any way to extrapolate this from typically

Any other sources for this information? I'm currently considering

Cyprio models.

Thanks for any help. I appreciate it. -Pat

I know Sequence pumps have power v flow curves available, but those

external pumps. For submersibles, the Laguna 5000 should give the

need at around 85 watts, which is the most efficient submersible I

when I looked.

If you can make an external pump work, they tend to be more

the submersibles.

Thanks for the reply.

I considered a Sequence but all their models are designed for larger
applications. The smallest I found (3200SEQ20) was rated for 2800gph.

Laguna 5000 looks good, but would probably need a prefilter. Our last

required a prefilter, which constantly clogged and was a real pain.

given how much lower it's advertised power consumption is than other
comparable mag drive products, I wonder how real it really is (either

or else the flowrate is not what they claim).

The appeal of either the Oase AquaMax/Powermax or Cyprio Titan is

ability to pass solids, which (I think) should make them more

free. And they both look (on paper at least) to be pretty effiicient.

I'm surprised the manufacturers don't include more information on the

use of their products since (in my opinion) this an important aspect

consider when making a selection, given how much it can cost to

these things 24/7.

Thanks again, -Pat

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