I have a low yield well: it's only 27 feet deep which is a big part of the problem. Recently a neighbor had their well re-dug to 350 feet which I guess lowered the water table, because ever since we have been running out of water much faster than before. If someone takes a shower, a second shower runs out of water about halfway through and it takes hours to get a decent amount back.
I know the best way to resolve this is either to get a new well dug, or to get a storage tank with a secondary pump. A new well is not happening right now because of the cost. However we are in the middle of building a new bathroom, and the tub we purchased will require us to get either a second or a larger water heater since our current one is 40 gallons but the tub takes around 55. Would the water stored in a second 40 gallon water heater make it take longer to run out of water when taking showers, doing dishes, etc., or will I still need to install a storage tank?