I bought a hot tub last fall and was experiencing difficulties with getting the water balanced. I went into Presto to get some help.Percy the owner did a test and advised me to drain and refill my tub to start fresh.He loaned me a pump free of charge and explained how to start it up again once it was refilled. I have been back many times since then and have been favourably impressed with the amazing service offered and the depth of knowledge of the owner.