Glass for sump?

[mike1773us]

How thick does glass need to be to safely hold water pressure at a height of 12 inches? The thickest piece Lowe's carries around here is 2.5mm I believe. I am rebuilding my sump due to failure of the first baffles made from thin acrylic. I'd like to get it right this time.

 

[little_d]

1/4" would do, mine is 12" and 4 baffles cost me roughly $40 at a glass shop. Look up a glass shop in the area and have them cut it to size for you. Make sure you have them polish the top so that you won't get cut.

 

[mike1773us]

Ok, thanks. I'll check into it.

 

[itstheantitang]

I got 3/16 glass, I don't see why to use thicker glass than the aquarium. (20L)

 

[spider86]

AceHardware cuts glass for free. I bought mine from Homedepot and brought it to Ace for the cutting.

 

[mike1773us]

Thanks to all. Spider, does Acehardware sell glass in that thickness?

 

[20 20]

My local True Value cut mine to fit, $1.99 per baffle. That includes the glass. I just sanded the edges down a bit with medium grit sandpaper, no sharp edges.

 

[spider86]

I believe they do, but I would call them first. The one by me has a large selection of glass.