50 Gallon Waterfall Lagooooon

[sphelps]

Originally Posted by FishyFishy!

Does anyone know how to tell if glass is tempered? I'd love to be able to drill the sump to have an emergency drain.

I doubt it's tempered but there's an easy way to be sure. You need two polarized lenses, one on each side of the glass and look through them while you rotate the lenses. If it's tempered you'll see a matrix type pattern which represents the internal stresses caused from the process. You can use polarized sunglasses if you have them.

You can test this procedure on your car windows, your windshield will not be tempered but your side windows will be.

[FishyFishy!]

Originally Posted by sphelps

I doubt it's tempered but there's an easy way to be sure. You need two polarized lenses, one on each side of the glass and look through them while you rotate the lenses. If it's tempered you'll see a matrix type pattern which represents the internal stresses caused from the process. You can use polarized sunglasses if you have them.

You can test this procedure on your car windows, your windshield will not be tempered but your side windows will be.

Huh, very cool! Imma try that! I think I saw that on YouTube once.

[molotov]

I would also put shut off valves on your RO lines to both your brute cans. It makes it handy if one barrel is full and you need to fill the other barrel. I often ran into a situation where I had my salt reservoir already premixed and it was half full. At the same time my Fresh water reservoir needed filling but I didn't want to top up my salt reservoir because it was already at the desired salinity.

[FishyFishy!]

Yup, it's already setup like that.