We run a constant pressure pump ( grunfos...been a great unit )and l'm just about to add a 100 L pressure tank to help stop short cycling and also give us a little water to use when the power goes out
We're getting a 5kw PV system installed next week , pity there was'nt a way to use when the grid goes down , anyway if the pressure tank works out ok , l might add another for some more capacity ( still much rather your water setup though


