Low flow pump recommendations?

[texmaster]

Hi Folks,

We've had this pond for almost 20 years and the pump in the lower pond has never gone out but it looks like its losing its pressure and I can't find a leak.

These are small ponds that flow into each other. Both are roughly 4x4x2. The bottom pond has the pump and the fish. The piping ranges from 1 inch pipe to 1/2 inch copper tubing going at best 6-8 feet in total to the top pond. I wish I knew more about it but this pond I didn't build it so my knowledge is based on observation over the years. Heck I don't even know how it takes in the water in the lower pond!

But man I've never seen a pump last this long and I don't know if its the low flow aspect or I just got really lucky but my experience is with much higher flow pumps 5000gph+ in my other pond so I'm hoping for someone with more experience here who can point me in the right direction for a brand and a gph. It is submerged.

 

[hamstermann]

I don't have any experience or advice to share, but those are some pretty ponds! Have you ever had sick fish from the copper pipe?

 

[JRS]

I have some old Supreme Pondmaster pumps that have held up good over the years. https://dannermfg.com/collections/w...ondmaster-pond-mag-magnetic-drive-water-pumps

Last year, had a new Tetra 500 gph with an impeller failure after few months.

 

[j.w]

I've had good luck w/Danner and Laguna pumps lasting long. Laguna has lower power consumption also.

 

[texmaster]

I don't have any experience or advice to share, but those are some pretty ponds! Have you ever had sick fish from the copper pipe?

no never

 

[texmaster]

I have some old Supreme Pondmaster pumps that have held up good over the years. https://dannermfg.com/collections/w...ondmaster-pond-mag-magnetic-drive-water-pumps

Last year, had a new Tetra 500 gph with an impeller failure after few months.

I found the old receipt and I mean old. 2002! And they called it a Supreme 1800gph pump

What I can't figure out is how the water is taken in since I've never even cleaned it mainly because I only have a vague notion of where it is in the lower pond.

 

[JRS]

They typically come with a plastic strainer on the intake/impeller cover and a foam prefilter. Some prefilters I had were too fine and would clog very fast, other ones had more coarse foam which worked much better.

 

[texmaster]

They typically come with a plastic strainer on the intake/impeller cover and a foam prefilter. Some prefilters I had were too fine and would clog very fast, other ones had more coarse foam which worked much better.

thanks very much!!