Best pump filtration for 300 gallon goldfish pond with waterfall?

Joined
Sep 14, 2013
Messages
6,391
Reaction score
5,165
Location
Cincinnati, Ohio
Hardiness Zone
6 A
Country
United States
I've never had a pond of that size, but honestly I'd probably consider one of those smaller pressurized filters, if you have NO koi and are not over stocked with goldfish. They are pretty easy to maintain and clean.

Another option would be a bog, lots of folks here have them :)
 

j.w

I Love my Goldies
Joined
Feb 1, 2010
Messages
34,519
Reaction score
21,278
Location
Arlington, Washington
Showcase(s):
1
Hardiness Zone
USDA 8a
Country
United States
Jump critters.gif
@Oakwood Meadow
I like Laguna pumps! Easy on power usage. https://www.lagunaponds.com/products/volume-supports/1200-gallons/powerjet-600-fountain-pump-kit/
 
Joined
Aug 13, 2025
Messages
7
Reaction score
3
Country
United States
For a 300-gallon goldfish pond with a waterfall, I’d aim for:

  • A pump that can deliver at least 2–3× the pond volume per hour (i.e. roughly 600–900 GPH), especially to drive the waterfall flow.
  • A mechanical + biological filter setup (e.g. a pressurized or external filter) to catch debris and support beneficial bacteria.
  • Consider adding a skimmer or pre-filter before the main filter, to reduce load from leaves and coarse particles.
  • Don’t forget easy access for maintenance — a filter that’s simple to disassemble and clean is a big plus.
  • If you have space, a planted bog or wetland zone can help take up excess nutrients naturally.
 
Joined
Jul 12, 2013
Messages
46
Reaction score
13
Location
Northern Illinois
For a 300-gallon goldfish pond with a waterfall, I’d aim for:

  • A pump that can deliver at least 2–3× the pond volume per hour (i.e. roughly 600–900 GPH), especially to drive the waterfall flow.
  • A mechanical + biological filter setup (e.g. a pressurized or external filter) to catch debris and support beneficial bacteria.
  • Consider adding a skimmer or pre-filter before the main filter, to reduce load from leaves and coarse particles.
  • Don’t forget easy access for maintenance — a filter that’s simple to disassemble and clean is a big plus.
  • If you have space, a planted bog or wetland zone can help take up excess nutrients naturally.
Can you name some all in one filters that would work?
 
Joined
May 21, 2018
Messages
1,353
Reaction score
1,000
Location
Florida
Country
United States
As an Amazon Associate we earn from qualifying purchases.

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.

Ask a Question

Members online

No members online now.

Forum statistics

Threads
32,057
Messages
526,626
Members
14,418
Latest member
mintymodel

Latest Threads

Top