Showing posts with label choosing pond pumps. Show all posts
Showing posts with label choosing pond pumps. Show all posts

Monday, June 28, 2010

Choosing a pond pump


Difference between Pond Pumps & Waterfall Pumps?
I've researching pond pumps for sometime and I've finally found one that right around my budget. My ponds gonna be right around 3000G and I found a pump rated at 5000GPH. but the pump says it's a waterfall pump. I will have a waterfall but I was planning on having the Pump I chose pump water to the Bio-Filter and then out the filter to the Waterfall. So is there a difference or are they all the same. I'm a newbie who needs a bit of guidance please and thanks.


  • The difference is probably the 'head' if there is any difference at all. Large pumps like yours are built for waterfalls, but that doesn't mean you have to use them for that.
  • Be aware that there are great, good and rotten brands of pumps. Factor in the warranty length.
  •  Some pumps have 3 years some 2, some 1. The pumps with longer warranties are more expensive, but worth it. 
  • Cheaper pumps also cost more to run, sometimes twice as much. 
  • Here's an article I wrote on how to choose a pump:

Friday, April 09, 2010

Pond pumps and underlayment

Pond Pumps: GPH and Water Circulation?
Why does a pump have to circulate 1/2 to the entire volume of water in one hour?
What pond liner, underlayment, and pump would be suitable for a pond 20 X 20 feet that is 3 feet deep?

Use 40 mil butyl rubber for a liner. You can use commercial underlayment or roofing felt. Old carpet can rot and start to stink as time passes.
To find liner size, measure the bottom, both sides and add 6'. I would get a 3500 gph pump so water will properly circulate. Circulating water adds O2 to the water, so the fish can breathe.

Monday, April 05, 2010

What pump should I buy?

Hi. I am wanting to find out what pump I need.
I am putting in a garden pond with a waterfall that will come down a 3 ft gradual slope. How do I know why gph pump I need to carry the water back up? Do you recommend filter boxes to protect the pump?


I would buy at at least a 2500 gph pump. I always suggest that folks buy a bigger pump than they think they need.
Yes, I advise a pre-filter. I like a box because the larger area does not gum up the impeller as fast.

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Wednesday, September 17, 2008

Choosing a Backyard Pond Pump

So many backyard pond pumps to choose from: Which one is best for me?

Backyard Pond pumps do one thing: They move the water in your pond from where it is to somewhere else. Most of the time they pump it up and over a waterfall. Other times they pump water through a spitter, an ornament in or next to your pond, often a frog, dolphin, fish or piece of statuary. Sometimes they pump water up in the air like you see in huge commercial ponds near the mall or on the farm.

There are things you must know before choosing the right pump for your pond. Half of your pond water has to move through your pump every hour. So if your pond is 1000 gallons, your pump has to pump 500 gallons per hour or GPH. As this is a bare minimum requirement, you would be best to consider a larger pump. For example, if you are moving water over a wide or tall waterfall, you need more GPH. If you are pulling water through a filter, you must be sure you are pulling enough to make the filter work properly. So figure on buying a larger pump than the minimum size, so you have some wiggle room.

So now you have water moving around in your pond. It sure looks nice and sounds great going over that waterfall, but moving does more then just look nice. If you have fish in your pond and feed them, the pond will be out of balance ecologically. Feeding fish makes them grow too big for the available oxygen, so your water needs to have oxygen introduced. Your pump does that. If the pond water surface is moving oxygen is being absorbed by the pond water and then your fish can breathe easily.

If you do have fish, and most pond owners do, you probably have a filtration system. The pump also pulls water through that filter system, either mechanical or biological. That filter pulls suspended debris out of the water. Usually the debris is algae and when you get too much algae, your water will turn green. The proper filter can keep that from happening. So the pump must be big enough to meet the needs of your filter.

You have three choices of pump types: Submersible, external and solar. Submersible pumps cost less, but do not last as long. They are still the pump of choice with most pond owners. Because they are made of a resin material, they can be used underwater, but if the seal is broken, the pump must be thrown away. It cannot be fixed and returned to the pond safely. A submersible pump can easily last 5+ years if cleaned regularly. Cleaning is important to a pump's life. They often sit on the bottom of the pond and suck in all the rotted organic debris sitting in the bottom of your pond. If left uncleaned for any length of time, the pump impeller, a reverse propeller that sucks water in, can become damaged quickly.

In general, the more expensive the pump, the longer it lasts. Always check the warranty length of any pump.

External pumps last longer, pump more water, can be repaired and are more expensive. They also need to be hidden somehow. No one likes to look at a pump and filter set up right next to their waterfall. But if you have a large pond, you might be better served by a external pump. They are certainly more efficient than submersible ones, they cost less to operate and can pump more water. Because they are stronger, they can work with most biofilters and last longer because they do not have to work as hard. If I were to get an external pump, I would look for one that pumped as many gallons per hour as my pond held. If I had a 5000 gallon pond, I would want a 5000 gph external pump.

Solar pumps are starting to come into their own. We still have a long ways to go before they will perform as well as we want them to, but the technology is coming along. The biggest drawback of solar pumps is they will not pump if the sun is not shining, so your pump will be off during gray days and at night. As solar energy storage technology becomes more widely available, solar pumps will become the best buy.

Monday, May 14, 2007

Do I need a pump?

Many people believe a pump will keep the water crystal clear. A pump will help keep the water clear, but that's all. A pump moves water and provides oxygen for the fish if you feed them and the pond is overpopulated. If you have a natural ecosystem there will be no overpopulation and therefore you will not need any pump if you don't wish to have one. A pump will also ensure that you will never breed mosquitoes. I generally suggest that folks have pumps for that very reason. And now that we have reliable solar pumps, lack of electricity is no longer an excuse. Most folks like them because we all like the sound of moving water and waterfalls.

If you have a waterfall, use a pump that moves each hour at least as many gallons as your pond holds. I use a 4300 gph pump, tee the output into two hoses and have great results. Generally, we leave pumps on 24 hours daily, but no pump has to be turned on all the time unless you feed your fish or have koi. You can set your pump on a timer and have it run only when you are outside to enjoy it. With electricity costs rising these days, a timer, available at most big box home improvement stores, might be just the thing to keep those costs down.