Low-Chlo: The Future of Pools with Founder Todd Guarino
Pool owners and pool service professionals are stuck between two frustrating options: run higher chlorine than anyone really wants to swim in, or buy a salt system that promises “softer” water while still functioning as a chlorine generator. The core idea in this conversation is simple but disruptive for pool maintenance: you can keep a residential pool sanitary with far less free chlorine by letting minerals do most of the sanitation work and using chlorine primarily for oxidation. That shift matters because it reduces the harsh, corrosive feel many swimmers dislike, and it can also reduce chemical spend, damage risk to pool surfaces, and wear on equipment. For homeowners searching “low chlorine pool” or “alternative to saltwater chlorinator,” the appeal is healthier-feeling water plus simpler weekly upkeep.
The Low-Chlo sanitizer system is described as a mineral-based pool sanitizing system that is not “new science,” but a technology adapted from established water treatment concepts and refined for residential pools. Inside the tank is a proprietary blend of algicides and algostatic metals. As water moves through the unit, a vortex plate causes a swirling flow that makes the powdered media interact, creating an electrolytic effect without an external power supply. That interaction releases ions and electrons that disrupt cells in the water stream, knocking down bacteria and helping control algae. Chlorine still exists in the program, but it is intentionally kept low, with a common target range around 0.5 to 1.5 ppm free chlorine, mimicking a lower commercial minimum in Florida rather than the “more is safer” habit that often pushes pools to 5, 10, or higher.
A key detail is how the system uses a trichlor tablet feeder primarily as an oxidizer rather than the main sanitizer. Oxidation helps clear out the byproducts of what the minerals have already killed so that dead material gets captured by the filter instead of lingering and turning water cloudy. The placement is also unusual compared with many traditional setups: the chlorinator is installed before the filter so oxidation happens pre-filter, and then the bypass routing through the mineral tank contributes to dechlorination before water returns to the pool and passes sensitive equipment like heaters. This design addresses a common concern from builders and retailers about sending aggressive chlorinated water through heaters, while also reframing the discussion: many pools already send high chlorine through heaters during shocking or from constant generation, often without the owner realizing it.
The episode also tackles the practical business side that pool pros care about: consumables, callbacks, and customer frustration. Salt cells are rated in operating hours, and variable-speed pumps often run longer at lower flow, quietly chewing through those hours. When salt cells last only a few years instead of the expected six to ten, homeowners feel burned. The Low-Chlo pitch is that it can reduce or eliminate ongoing salt purchases and cut down routine shocking for traditional chlorine pools. Maintenance for the unit is positioned as quick and mechanical: reversing flow through the tank via unions on a bypass manifold, typically annually after pollen season in places like Florida, and more frequently in hard-water regions with high calcium. A 10-year limited warranty is tied to maintaining balanced water chemistry, highlighting a broader truth in pool care: pH control, stabilizer management, and general balance still matter no matter what sanitizer approach you choose.
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