What size pump to use?

greenj · 25-10-2011, 11:01 AM

Hi all.

I am looking to start my first pond build at the start of next year and have decided on what my set up will be, just need a bit of advice on size of pump i should be using?

I am planning on a pond of 10ft x 5ft x 5ft which i work out at about 1557 gallon.

For the time being i am going to keep it simple with bottom drain, pump, uv, eazy pod air and keep a space in my plumbing for a heater at a later date.

Any ideas on the size of pump i will need for this set up?

John.

gaz 69 · 25-10-2011, 11:55 AM

Quote:

Originally Posted by greenj

Hi all.

I am looking to start my first pond build at the start of next year and have decided on what my set up will be, just need a bit of advice on size of pump i should be using?

I am planning on a pond of 10ft x 5ft x 5ft which i work out at about 1557 gallon.

For the time being i am going to keep it simple with bottom drain, pump, uv, eazy pod air and keep a space in my plumbing for a heater at a later date.

Any ideas on the size of pump i will need for this set up?

John.

hi i have a eazypod and i was told the biggest pump you can have going in is 10,000 i have a 7,500 hope this helps. Gaz

Doghouse Riley · 25-10-2011, 12:12 PM

Hi!

You might already know this but others may not.

It's not about the size of the pump, it's about the "dwell time," the length of time the water stays in your filter to enable it to "do the business."

The volume of your pool will determine what capacity filter you need and the manufacturer of the filter when you get one, should advise what the flow rate parameters should be.

Bear in mind you will have to measure the "head height" to the filter from the pump to calculate the rate. This information should be on the box of the pump.

Finflapper · 25-10-2011, 05:36 PM

Hi John, I think Gaz is spot on. You will have just over 7000 lts so a 7500 pump will give you an hourly turnover rate roughly.

Easypods have a max flow rate of 10,000 lts/hr and will cope with up to 10,000 lts of koi pond.

Doghouse Riley makes an important point about head of water. If you are going to pump uphill to a watercourse or a waterfall you will need a larger pump which will deliver around 7,000 lts at the outlet hight.