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The 9991408-R4 is a genuine OEM replacement kit of four spring-cartridge filter panels designed for select Maytronics/Dolphin robotic pool cleaners
This is a cost‑effective upgrade for any residential pool owner seeking reliable filtration
Raises and stabilizes CYA to 30–50 ppm — Helps maintain the protective buffer that shields chlorine from UV rays
delivering reliable results with every cycle
Applied Biochemists Algaetrine King Tech The 9991408-R4 is a genuineApplied Biochemists Algaetrine effectively kills off any green and mustard yellow algae using elemental copper, restoring your pool to its former beauty. Copper is just as effective as the harsh chemicals other brands frequently use, and will not clog your filter, cause foaming, or affect water clarity. It even allows swimming immediately after application! Best of all, Algaetrine is made by Applied Biochemists, a leader in bio based pool chemicals,
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