before i order one last check up

[milkman407]

I'm about to order my acrylic and wana make sure i get the thickness correct.
the tank is 18" tall and is acrylic. I've been getting mixed answer some saying 3/8 some saying 1/4... soo i thought i would ask.

 

[Gr8KarmaSF]

I always tend to go thicker. Better safe than sorry IMO.

 

[milkman407]

I would agree with u on that, considering the tank will be holding around 135 gallons I dont think 1/4 would hold out as long as 3/8" would.

 

[Gr8KarmaSF]

FYI - My old 140g. acrylic started bowing at that thickness....

 

[milkman407]

at what thickness 3/8? the tank is 70" long 18 " tall and 24" wide.

 

[M|L]

Thicker is always better, but there should also be support beams (not sure what they're technically called) and other structural reinforcement for such a large tank.

 

[johnptc]

Thicker is always better, but there should also be support beams (not sure what they're technically called) and other structural reinforcement for such a large tank.

for that length you might need 0.5 inch

see http://cyro.custhelp.com/cgi-bin/cy...p_tbl=9&p_id=133&p_created=1161891531&p_olh=0

 

[milkman407]

i gota log in for that link.. not gona sighn up

The tanks will have tops so there will be extra support, but are u serious i have to go 1/2? if thats the case i will drop it down to 16" and go smaller. I need the smallest possible without it bowing.

 

[milkman407]

so should i be fine with 18" acrylic at 3/8" or should i drop the height down to 16"

 

[vanimate]

Didnt you build an acrylic tank that was bigger than 140 gallons?