Pond liner + viewing window?

[earthstudent]

I am wondering what kind of success people have had with using a pond liner for a large tank build and putting in a viewing window.
For those that have done this, did you have any problems? Did it ever leak? How did you do it? What did you use as a sealer? How long have you had it set up? Did you use glass or acrylic? Do you have pics?

 

[ITHURTZ]

330gallon twin 3/4" acrylic windows secured with SS bolts with 3m 5200 marine adhesive

Assembly stages

I first tried this out on my 180gallon. Same deal different tank

+


Any problems? NOPE
How long setup? My 330 galon has been up and running since october 2009
Glass or acrylic? 3/4" 2'x4' twin windows acrylic
Sealer? 3M 5200 marine adhesive

How did I do it? Drilled h oles through plywood and window, cut out window, applied sealent, bolt to plywood, cut pondliner to window size.

 

[BadOleRoss]

I have never tried this but I would think that if you placed a pond liner in a tank, ran bolts through the glass and pond liner into the frame of the tank, tightening the bolts compressing the glass against the liner would create a water tight gasket and you should not need sealants.

 

[ITHURTZ]

Over tightening to acrylic will cause it to crack where the holes are. You do not want to make the bolts real tight. I hand tightened mine, then slightly make them a lil more tighter just to make sure the window didnt move in anyway when water changes were applied.

 

[Zfishies]

Hurtz could i do this with not so thin but not so thick metal sheets? i want to build one now

 

[ITHURTZ]

What do you mean with metal sheets?

 

[mike huntley]

how about using glass as the viewing window? check my thread please if you don't mind, i'm loosing confidence in epoxy

 

[ITHURTZ]

Glass for a pond liner instead of acrylic? sure

Only difference is acrylic you bolt, glass you need to make a frame to hold the glass, and have the frame hold it to the tank.

Kinda like a picture frame

 

[BadOleRoss]

Here's a nice pick I found someplace and saved because I liked the application.

 

[ITHURTZ]

Is that glass? And silicone to rubber?