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.

[sphelps]

While we're nip-picking you should move the one tee on your return line, the horizontal one right after the tee should go on the vertical leg that feeds your display. You can also remove the first tee after the return pump.

[bigmac]

In addition; most glass tempering facilities will imprint or acid etch their logo into a corner of each tempered piece of glass. Take a look for a small white logo in all of the corners. If you see one; it will for sure be tempered.

[FishyFishy!]

Originally Posted by sphelps

While we're nip-picking you should move the one tee on your return line, the horizontal one right after the tee should go on the vertical leg that feeds your display. You can also remove the first tee after the return pump.

Steve are you talking about the manifold? Or the small feed line for the waterfalls?

[sphelps]

Originally Posted by FishyFishy!

Steve are you talking about the manifold? Or the small feed line for the waterfalls?

Like this

[FishyFishy!]

Thanks! The only reason I thought of the valve on the manifold, was in case I had to isolate it, or take it off. This way I could shut all the valves, and not have water spill everywhere when I undid the union. But being that it's over the sump, that won't matter. And it will save me $10 on the valve! haha.

[sphelps]

I kind of assumed it was one big manifold. Either way I think you'll need that valve there in order to better control the feed line for the water falls, reason being is you'll probably have to restrict it a little to make enough of a pressure difference to send water up the feed line which is higher than the tank.