A thirty gallon water heater should be sufficient.
40 Gallons minimum
A water pump is needed to pump in fresh water.
The wattage of the water tank is needed to size the breaker and the wire to feed the tank.
Most water tanks will be labled by size. That means how many gallons the tank hold is what it is called. A 100 gallon tank will be sold as such and a ten gallon tank will be labled that way. So just check the labels. Most water tanks hold about thirty gallons of water. Of course the bigger the tank the more water it will hold. And you can purchase apartment sized water tanks that will hold a lot less then the average water tank.
A water tank can be used for the storage or transportation of water. A hot water tank is used to heat water and keep it at a set temperature until it is needed. Water tanks can also be used to provide an emergency water supply to areas that have had storms or natural disasters.
Crayfish are very good at getting out, so it's best not to fill a tank to the top.
Because it's needed to make the salt brine that is exchanged for hardness.
10 awg
a small fish tank.
Water,the fish tank,and alot of room so the fish can have room to swim around in.
Traditional water heaters heat large amounts of water and hold it in a tank until it is needed. It periodically reheats the water to keep it at a set temperature. All this heating costs money. A Bosch tankless water heater has a very small tank mounted on the wall that rapidly heats the water only when it is needed.
1000 gallons
You may have a small hot water heater in your house or apartment, this will use up all the hot water in doing laundry so the tank needs to fill up and heat again.