Probably, but I wouldn't recommend it! Aquarium vacuums work much better, and are often called 'gravel washers' or 'siphons'. They are available online at www.bigalsonline.com under the maintenance section.
A vacuum breaker is a device that prevents water in a toilet cistern or water tank, from syphoning back into the toilet cistern or water tank.
the salt comes with a scoop and 1 per gal of water is what I do and it has worked great for me
Vacuum Chamber
Robert Frost
Epoxy is a near perfect water barrier. This applies to salt water as well. As the epoxy coated tank and the salt water does not contact, the corrosion does not occur.
i dont really know sorry
If you are premixing the salt in a large container outside the tank, then put the sand in first. If you are going to mix the water and salt in the tank, then put the water in and mix it first, and then when its mixed put in the (rinsed!) sand. It will fog up, but that will go away.
no
The simple answer is yes.
It will swell and burst
they will die
The best place to find a salt water fish tank is in the Marine Depot. Not only can you find salt water fish tanks, you can also find aquarium supplies and LED lights.