bucky wrote:
Don't buy a tote with less capacity than the tank you are dumping unless you are real quick on shutting off the valve.
Some have level indicators that pop up. They do give an early warning but don't be staring at the neighbors wife while the tank is draining. Yours might knock you out and then you got a real mess on your hands. :)
If you are just using it for the grey tank then small will be OK. I use the adapter for a hose fitting . I have a small 12" section. I can see the tank fill up and turn off the valve before it overflows.