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The Harmsco ST105 Filter Cartridge is a replacement cartridge designed for pool filtration systems
or it lights inconsistently because gas flow is not opening or closing the way it should
Compact & Lightweight Design: Easy to install in various outdoor settings
high-energy sprays—without swapping components
AquaChek Digital Test Strip Refill, 50-Count | 512082 SloanLED The Harmsco ST105 Filter CartridgeAquachek Digital Test Strip Refills 50 Strips The Aquachek Digital Test Strip Refills come in a 50 strip pack for pool testing. These refills provide a straightforward way to perform digital water testing and monitor your pool chemistry. Keep your testing routine on track with ready to use strips designed for digital testing workflows. Key Features 50 strips per pack Replacement strips for digital pool testing Designed for use in digital testing