So we are looking at a pool monitoring system for the Hotel. We are wanting a system that monitors Ph, Alk, and Chlorine. Anyone know of a good dependable accurate system? We had someone from EcoLab come in and talk with me about one but they want $1500 a month. Their big selling point is that they monitor the pool as well and can make changes to keep the pool in limits. But we are here all the time so we don't really need the service but that did get me looking into pool monitoring systems. So if you have any info I would be grateful to hear it.