HTH Pool Filter Cleaner 32 oz Concentrated Overnight Formula — Dissolves Oils & Scale for Cartridge, D.E. & Sand Filters

HTH 67227 is a concentrated 32 oz filter cleaner designed to dissolve oils, scale and debris from cartridge, D.E., and sand pool filters overnight for improved filtration performance.

Whether you run a chlorinated backyard pool or a saltwater system, trapped oils, lotions and mineral deposits will reduce filter flow and clarity. This ready-to-use formula is made to be applied in the evening and left to work overnight, loosening trapped contaminants so the filter can be rinsed clean and return to optimal operation.

How will this cleaner restore my pool filter’s performance?

HTH filter cleaner targets the organic and inorganic buildup that blocks filter media and reduces circulation. By breaking down oils, grease and mineral films, it helps recover flow rate and improves the filter’s ability to remove fine particles.

• Dissolves oils, lotions and sunscreen residues that clog media
• Softens mineral scale and calcium deposits for easier rinsing
• Restores flow so pumps and heaters run more efficiently

Can I use this on my cartridge, D.E., or sand filter?

Yes — the formula is compatible with all common pool filter types, including cartridge, diatomaceous earth (D.E.) and sand filters. Follow label directions for the specific filter type to ensure safe and effective cleaning.

• Cartridge: soak or spray and let sit overnight, then pressure-wash
• D.E.: apply to cloth components or media, then backwash and recharge
• Sand: add according to instructions to loosen debris before backwashing

How and when should I apply the cleaner?

For best results, apply in the evening and allow the product to work overnight when the pool is unused. The next morning rinse, backwash or pressure-wash the filter according to the manufacturer’s guidance to remove loosened deposits.

• Apply as directed on the label and allow overnight dwell time
• Rinse or backwash thoroughly after treatment
• Use periodically for maintenance or when you notice reduced flow or dirty filter media

Will this work with saltwater systems or other pool types?

HTH 67227 is formulated to be effective in both traditional chlorinated pools and saltwater systems. It is intended for filter maintenance only and should be used according to product instructions to avoid affecting pool chemistry.

• Safe for use in saltwater pools when used as directed
• Designed for routine maintenance or deeper periodic cleaning
• One 32 oz container treats typical residential filters as directed

Who is this for? HTH 67227 is aimed at homeowners and pool service professionals who want a straightforward, overnight filter cleaning solution compatible with cartridge, D.E., and sand systems. If your filter shows reduced flow, holds visible oils, or you’re preparing filters for peak-season use, this concentrated 32 oz formula offers a practical maintenance step to refresh filter media and help your pool run more efficiently.

• Features: Clears trapped gunk so filters operate correctly and water stays ready for swimming
• Use: Apply in the evening and allow to work overnight
• Compatibility: Works on cartridge, D.E., and sand filters; suitable for saltwater systems
• Includes: One 1-qt (32 oz) container of HTH filter cleaner