Installing Pond Liner

[Teemingtank]

Hi everyone, I’m making this thread in regards to a project I’m working on. I’ve recently framed out a “lagoon” style box and installed the liner. I was curious if I could get some feedback on how the liner is fitting at the corners after my installation. I’ve got some 4x4’s on the interior of the frame and I’m a bit concerned of how the liner will stretch/form around those under water pressure. If the post gains some traction, I will post some photos and explain further.

 

[braaap]

@DIYreefer is the pro with this stuff.

 

[Reefering1]

Pics would help you get better advice/opinions...

 

[Johnd651]

I've used pond linear before outside and it seems to have some stretch into holes and cracks. I'm not sure but would think it would be within the stretch

 

[Teemingtank]

I know it’s not exactly eye appealing, but I did my best to fit this thing loose, and it’s also not finished yet Where my fingers are pushing in the corner is where i am concerned. You can’t press the liner all the way to the corner

 

[Dom]

I know it’s not exactly eye appealing, but I did my best to fit this thing loose, and it’s also not finished yet Where my fingers are pushing in the corner is where i am concerned. You can’t press the liner all the way to the corner

What is under the liner?

I would sand under the liner to fill voids like this.

 

[Teemingtank]

What is under the liner?

I would sand under the liner to fill voids like this.

Thanks Dom! Hopefully I can add that without ruining my staple job. I like being able to sleep at night, I’m gonna give it a shot

 

[gignet01]

how did this turnout ? im doing basicaly the same thing but i was thinking about putty-ing the corners under the liner and also what do you guys think about my design ? its only to the drawing stage rn, it would be a saltwater frag pond 48inch high but only 12 inch deep of water since coral frags dont need lot of water.. this would be a 4x8ft

 

[gignet01]

sorry for the long link, just gotta copy and paste it for the plan.. my bad