Hot Tub Things® Cartridge Cleaner – Deep-Soak Filter Cleaner 32 oz

Concentrated cartridge-cleaning formula engineered to lift oils, lotions, soaps, and grease from pleated spa filters, restoring their original filtering power.

Ideal for a deep soak—simply submerge the filter in cleaner and water overnight for maximum ease and effectiveness.

Contains powerful emulsifiers and wetting agents that break down organic buildup without harsh abrasives.

Compatible with chlorine, bromine, ozone, salt, and mineral sanitizing systems, making it safe for all spa types.

Regular use helps improve circulation efficiency and reduces strain on the pump and heater components.

Helps control bacterial growth by removing contaminants that can harbor microbes, supporting healthier spa water.

Made by Hot Tub Things—America’s #1 trusted spa chemical brand—formulated specifically for spa filters.

Convenient dime-sized bottle (8.82″ × 3.19″ × 3.11″, 2.23 lb) fits easily into maintenance kits and storage areas.