18' x 9' x 3.5' catfish tank build in progress.....

[Lil_Stinker]

I wonder if there's such thing as an 18 foot level? ......

Perhaps a laser level?

 

[puffcrusader696]

^^ good one! thatll work well for the whole tank

 

[zennzzo]

 

[Oreo]

Laser level will not be as accurate as a 20' piece of clear vinyl tubing with water in it. Make sure there's no air bubbles & the water level at one end will be the same exact height as the water level at the other end. Read from the bottom of the meniscus.

 

[RichardKranium]

Just awesome Looking forward to see it full and stocked

 

[cvermeulen]

Laser level will not be as accurate as a 20' piece of clear vinyl tubing with water in it. Make sure there's no air bubbles & the water level at one end will be the same exact height as the water level at the other end. Read from the bottom of the meniscus.

Sounds like a good idea... but at 20' there will be quite a bit of sag to a 20' vinyl pipe, esp when half full of water, so it won't be much help making sure the tank is straight as well as level

 

[Verbosity]

Looking great!

 

[Lil_Stinker]

The tube idea, true for the ends... also have to check it every couple feet also. Not just at the ends.

 

[black&white]

really sweet man , hope to have one of my own for my catfish's. great inspration.

 

[larryluvfish]

Are u putting another layer plywood on tank floor? If not I would fiberglass the whole entire tank, but if u put another layer of plywood on the tank floor i think u can get way just glassing the joints.