Looked at the previous reviews and was a little skeptical. Turns out they were dead wrong, Karl, the owner could not have been more helpful. He diagnosed the problem with the valve, turned out to be nothing more then him removing and resealing it for us. Went over the entire pool system with us and told us exactly what to do, where to buy and answered all the questions. The total charge for the knowledge and bit of work he did on the valve didn't dent our pocket at all and was well worth it.
Also, I have checked into other monthly pool services, Pool Masters was $5 higher and hands down I would use them without negotiating a price to get them to match the other. Recommended!!!