FROG Replacement Mineral Reservoir for Pool FROG 5400 Cycler — Prefilled 6‑Month Cartridge, Low‑Chlorine Gentle Water

The FROG Replacement Mineral Reservoir is a prefilled, six‑month mineral cartridge engineered to fit the Pool FROG Model 5400 Cycler and simplify pool sanitization.

Replace your spent cartridge with this ready‑to‑install mineral reservoir to restore the Pool FROG 5400 Cycler’s mineral dosing system. Each reservoir is loaded with FROG’s patented sanitizing minerals and works together with FROG Bac Pacs to maintain balanced, gentler water while reducing overall chlorine demand. The cartridge is designed for straightforward swaps, predictable performance across a season, and compatibility specifically with the 5400 Cycler.

How does this cartridge keep my pool water cleaner?

The reservoir continuously releases sanitizing minerals that support Bac Pac oxidizers, creating a paired sanitization approach. That steady mineral presence helps maintain clearer water between Bac Pac replacements, reducing the peaks and troughs of manual dosing.

• Prefilled with proven FROG mineral formula for consistent delivery.
• Works in tandem with Bac Pacs for automatic sanitization cycles.
• Reduces visible contaminants and helps maintain balanced water.

How long will one Reservoir last and how often do I replace it?

Each reservoir is formulated to provide mineral dosing for one pool season—about six months—under normal residential use. Bac Pacs, which provide the oxidizing agent, are replaced more frequently (typically every 1–3 weeks) and do the active chlorine or bromine work in short bursts.

• Mineral reservoir lifespan: approximately six months or one swim season.
• Bac Pac lifespan: expected every 1–3 weeks depending on pool size and usage.
• Replace reservoir at season start or when performance drops to restore system effectiveness.

Will this lower my chlorine needs and improve swimmer comfort?

The minerals are designed to reduce reliance on traditional chlorine by up to about 50% in normal operating conditions, which can result in softer‑feeling water that many swimmers find gentler on skin and swimwear. This is achieved by pairing mineral sanitation with periodic oxidizer dosing rather than continuous high chlorine levels.

• Reduces chlorine usage in typical pools, helping soften water feel.
• Supports clearer water with fewer strong chlorine odors.
• Compatible with standard Pool FROG maintenance routines and Bac Pac replacements.

Who is this replacement reservoir best suited for? Pool owners who use the Pool FROG Model 5400 Cycler and want a low‑effort, season‑long mineral dosing solution will benefit most. It’s ideal for families, regular swimmers, and anyone seeking a balanced sanitization system that cuts chlorine exposure while keeping water clear. If you already run a FROG 5400 Cycler, this reservoir is the correct, prefilled cartridge to restore mineral performance for a full season without complex setup or mixing.