Recommendations for Fiberglass Pond

  • We are currently upgrading MFK. thanks! -neo

Oceangold

Feeder Fish
MFK Member
Jun 17, 2025
7
4
3
USA
I am looking for a large pond with a viewing window. Does anyone have recommendations for one, preferably fiberglass?
 
Self build. I preferred wood build with butyl liner and a Perspex viewing panel myself but the wood frame would have worked with fibreglass and Perspex too. I notice you can now get many custom built nowadays but they don’t come cheap.

I would suggest your looking in the correct direction for a potentially 3 ft arrowana and bass.
 
Self build. I preferred wood build with butyl liner and a Perspex viewing panel myself but the wood frame would have worked with fibreglass and Perspex too. I notice you can now get many custom built nowadays but they don’t come cheap.

I would suggest your looking in the correct direction for a potentially 3 ft arrowana and bass.
Is there any blueprint or example you followed to get started on building one?
 
Not one I followed although I am sure there will be some out there. I used 4”x4” fence posts for the framework at the corners and every 4ft with 4x2 horizontally between spaced every foot. Then boarded the whole thing with ply with insulation in the gaps. But I know others have used railway sleepers (disadvantage is you cannot insulate) and others who have used garden decking planks.
My method allowed me to use 4” and 6” nails and keep the cost down. It also allowed me to use a Perspex viewing panel bolted through the wood and an angle iron frame screwed to wooden fence posts. The liner has to be folded at the corners although you can buy a box welded liner made to the exact measurements to remove folds. With the Perspex viewing panel you can drill it and bolt through it every few inches and silicone over the bolt heads, trapping the liner and sealing it. Didn’t therefore have to worry about fibreglassing anything or sealing glass panes in. It’s just over 3ft deep x 11ft x 7 ft so a decent size. I have rocks, gravel, tree stumps, the lot as well as catfish with spines such as tiger shovelnose and ones with scutes such as oxydoras Niger, and granulosus. Liner is a thick butyl so I have no concerns and it’s been running over 12 years now.

If I had the cash I would probably buy a prebuilt fibreglass version but mine probably came in easily less than a quarter of the price.
 
MonsterFishKeepers.com