Ply indoor pond / tank build . Time for bigger

[jasoncambs]

Well i decided to attempt a 2000 litre ply build .
And today i started

 

[jasoncambs]

What you see is the bottom . I will be sealing and then i will fix a full ply sheet then flip it over, repeat the timber around the top as i have done with the bottom . Then i will fit vertical bracing timbers all around . A final seal then a liner will go in .
To finish it off i will put decking board around the rim and skin the outside with a as yet undecided material .

I will update with progress pics untill completion .
Plan is to move my israeli kio into it .

 

[jasoncambs]

Slow progress .

 

[jasoncambs]

So i am not sure if i should use a sealer paint or a pond liner . Maybe people can give ideas on this as i will be at that stage in a weeks time .

 

[BIG-G]

I have never did this so takes my advice as opinions not fact.
But I believe I would go with a liner. It seems to me that it would be easier, and less likely to have leaks.

 

[jasoncambs]

They watching me build their new home

 

[jasoncambs]

Bit more done.
Underlay .liner. and water in .

 

[jasoncambs]

I really want to get more done this weekend . I have checked for any bowing of the panels and found a difference of 3mm on the end panels . So i will be draining and fitting a horizontal brace in the centre of the end panels . Need to drain it to move it to get to one end . I am not sure if the 3mm of bowing on 18mm ply is acceptable but just to be safe .
Any thoughts on this from experienced ply tank builders . ??

 

[BIG-G]

Looks good. Flexing is expected as long as it's built strong enough to not come apart I would worry. Because you are using a liner and the liner will flex with the plywood you shouldn't have any problems.

 

[BIG-G]

I meant to say I wouldn't worry. If the flex isn't enough to make the tank fail you should be okay