Tite Seal

[PaulR]

I'm working on my tanks and plan to use Tite Seal for the access plate. I see Spruce has light and medium weight. I assume the medium would be the proper one. Any suggestions?

Thanks

 

[DGlaeser]

That's what I'm using

I made the same guess, and it seems to be just fine - the tanks hold air anyway
I've never used the light weight stuff so I can't offer a comparison.