400g Build Advice

[Anyparxia]

Hello, I'm planning on making a fish tank 240x90x70cm LxWxH. The glass thickness is 1/2". It's gonna be top and bottom euro braced the width is 4" and made of 1/2" glass along with 4 cross braces at 7" width also 1/2" glass. The drains are 3x 2-inch drains and will be a bean animal overflow. The returns are 1x 1 1/2" and 1x 1 1/4" which will allow at least 5x turnover rate. The weir combs are 4mm width and 1.5" height. Overflow box dimensions are 17x5x5" Rated for 6600 Gph based on my calculations. My questions are:
1. Is the height too tall for this thickness of the glass?
2. Is the weir and overflow box flow rate correct?
3. Is the plumbing good?
All advice and suggestions would be much appreciated!

 

[pacu mom]

According to the glass thickness calculators found in this thread, 1/2" is OK.

Glass/Acrylic Thickness Calculations

This is a bit of a research compilation for building your own glass or acrylic tank. Please feel free to post up another great site or thread that discusses the same topic. The more we have listed, the better we can compare all of them and come up with some solid guidelines. Thanks

www.monsterfishkeepers.com

 

[Anyparxia]

Thank you for your help and suggestion! This thread has helped alot.

 

[..puSkar..]

Thank you for your help and suggestion! This thread has helped alot.

12 mm will be fine upto 2 ft height but if you get 14mm glass available id suggest you use that instead of 12mm .

 

[Lepisosteus]

Use 5/8” or 3/4” glass. 1/2” is fine if you are very capable and experienced building tanks which most are not.

 

[Anyparxia]

Im still debating the glass thickness. I plan on getting the glass cut in a few weeks. BIG-G Any Inputs would be helpful.

 

[BIG-G]

I personally wouldn’t use 1/2 inch for anything over 24 inches, unless it was tempered glass.
I know some manufacturers use tempered 1/2 inch for 30 inch tall tanks.
I have a 150 that’s 30” and 1/2 tempered glass.

 

[Anyparxia]

I personally wouldn’t use 1/2 inch for anything over 24 inches, unless it was tempered glass.
I know some manufacturers use tempered 1/2 inch for 30 inch tall tanks.
I have a 150 that’s 30” and 1/2 tempered glass.

If I did a double base with 12mm or a single 15mm base would it be better?

 

[BIG-G]

The base isn’t as important as the length and height when calculating glass thickness.

With euros around the top and cross bracing 1/2 inch would probably work.
I personally would over build. Thus my original opinion of going with thicker glass.

I’ve never built tanks with two sheets of glass on top of each other.
I’m assuming that’s what you mean when you say double base. One sheet down then another sheet smaller to give room for the side panels. Correct?
Tanks built this way will give some extra holding power for the sides but you could accomplish the same thing with inside euro around the bottom.

 

[..puSkar..]

The base isn’t as important as the length and height when calculating glass thickness.

With euros around the top and cross bracing 1/2 inch would probably work.
I personally would over build. Thus my original opinion of going with thicker glass.

I’ve never built tanks with two sheets of glass on top of each other.
I’m assuming that’s what you mean when you say double base. One sheet down then another sheet smaller to give room for the side panels. Correct?
Tanks built this way will give some extra holding power for the sides but you could accomplish the same thing with inside euro around the bottom.

Agreed. 12mm glass should suffice for a tank 2ft/24inch high. Euro braces would give it the best support.
But if you have the option for 14mm or 16mm I'd use that for extra support and peace of mind.