Slimline Water Tank design issues?

[Bec]

We are planning on installing 2 slim-line water tanks for use on the garden (one each side of the house). I have heard, however, that there have been design/structural problems with slimline tanks over a certain size. It seems that when they are full they tend to buldge out around the centre as they are unable to hold that amount of water. Has anyone else heard about this?
Thanks in advance

[journeyman Mick]

I've noticed that some of the plastic tanks have a void moulded through the middle of the tank. I presume this is to join the two halves together to stop any bulging. Not sure about the steel ones, how big you can go before it's an issue. Just ask any prospective suppliers if they will provide a written guarantee that their tanks won't do this.

Mick

[bsrlee]

Actually the bulge in the middle means they will hold MORE water, at least until either the stand fails due to too much weight, or the bulge pushes it off the stand (I remember hearing about a nasty accident with a bodgy install job giving way)

And yes, several of the plastic tanks have some form of joiner thru the middle to stop excess bulging - a lot of them look like waffles, some have holes, others have bolts (damn the leaks, full speed ahead).

[jimc]

The ultra slim line Bluescope steel tanks have lots of baffles inside the tank to stop bulging. Only downside is the 2500 tank cost $1300!

Cracker of a tank though and it is an architectural feature of the backyard...not hidden like a plastic one needs to be.

[Ghengis]

I have had two slim line tanks in 12 months, 1 a blue scope and 1 a plastic tank. The blue scope base plate was not sealed properly so I returned this for a refund and purchased a plastic tank from another company which has now split after 4 weeks being filled with water. I am not looking for a slim line manufacturer that can supply a quality tank!

We are planning on installing 2 slim-line water tanks for use on the garden (one each side of the house). I have heard, however, that there have been design/structural problems with slimline tanks over a certain size. It seems that when they are full they tend to buldge out around the centre as they are unable to hold that amount of water. Has anyone else heard about this?
Thanks in advance

[Ghengis]

I have had two slim line tanks in 12 months, 1 a blue scope and 1 a plastic tank. The blue scope base plate was not sealed properly so I returned this for a refund and purchased a plastic tank from another company which has now split after 4 weeks being filled with water. I am not looking for a slim line manufacturer that can supply a quality tank!

[Mcblurter]

Hi, I got a Fatboy Waterwall
http://www.waterwall.com.au/index.cfm?p=2116
no bulging, good design, easy to install. Cost me $1250, I see now they are $1350. Good for a small area like we have.
Cheers
McBlurter

[China]

The latest slimline tanks in steel have external braceing to combat this problem, I haven't as yet filled it with water so I hope it does not leak as yours did ghengis accesss to replace it is a bit of a bother

[Planned LScape]

A few plumbers I have spoken to have said that the Bunnings tanks and other cheap varieties are pretty thin in the walls and can be prone to splitting. One tank I remember giving a big slap and it wobbled about like smacking a fat chick on the ????, it was a 5000Lt tank

[SilentButDeadly]

If you are looking for a slimline tank that isn't a slimline tank then you could do worse that look at this idea. I use tanks from these guys and they are a reasonable product...both price wise and quality

http://www.globalwater.com.au/produc...products_id/66