heres a picture sent to me by my friend...

as what you can see this is an aquarium calculator...
my friend and i wanted to know if his upcoming aquarium will hold a water 15inches deep...

heres a list of his cut glass... all glass are .4cm thick and in exact measurment...
--3pcs 59inches x 40cm
--2pcs 40cm x 40cm

just make sure you use enough glue:laugh:

im not really a metric kinda person but the tank you describes sounds like about 50 imp gals and in that case i wouldn't go with glass any thinner than 3/8" myself.

but thats just my opinion...

good luck with your build

Pressure increases with depth so its the depth that determines the thickness. Make sure you get that right

thank you so much for the reply guys

Ive built many tanks in the past year and havnt had any tank leak or pop on me and i always use 10mm glass.

im currently building a tank that is 1900mmx750mmx750mm

this is also made out of 10mm glass the depth of the water detemins wheather u go with thicker glass make sure you use a centre brace and two side braces over the top that silicones on the top where yr lids go.

also put sum braces on the base from front to back an from side to side.

never build a tank deeper than 750mm without going for extremly thick glass.

hope this helps

also after looking at yr software it mentions use 4mm side 8mm base.

dont go that route as diifrent thicknesses of glass put un neccasery strain on the glass and silicone.

make yr whole tank out of 10mm glass with all the above bracing and you will be sweet

thanks for the advice but 10mm is too thick and expensive... besides, i already have my glass ready to be build... the only thing i need to do now is to cut my extra glass for braces, build up a stand and pray that it would go well...

if not, well the only choice i can think now is to reduce the depth of the water... i just hope it would not break in my first try...

thanks everyone guys... wish me luck... LOL

oh btw, one more thing... its about the silicon, once you open it do i need to empty the can? is it okay that it will seal itself? can i reuse it again?

All silicone (fish, bathroom etc) in the uk all comes in tubes that you screw a cone shape on the end and use a sealant gun. When i have finished using sealant for a job i unscrew the cone, put some clingfilm over the hole and screw the cone back on. The sealant in the cone goes off but the stuff left in the tube stays soft and usable. When i want to use the sealant again i just put a new cone on. However if you havent got a new cone just use a drill to empty the cone