APEC WATER Replacement RO Filter Set for ROES-PH75 — Alkaline 75 GPD, 6-Stage Protection & Mineral Boost

APEC Water FILTER-MAX-ESPH is a complete six-stage replacement filter set that restores your ROES-PH75 reverse osmosis system’s performance and returns alkaline, mineral-enhanced water at up to 75 gallons per day.

This FILTER-MAX-ESPH kit contains the full sequence of filters and a 75 GPD membrane designed to protect the system, remove common contaminants, and then reintroduce calcium carbonate for a balanced pH. Each component is matched to the Essence ROES-PH75 under-counter system so you get reliable fit, long service life, and predictable water quality between replacements.

How does this filter set protect and extend my RO system?

The first three stages are dedicated pre-filters that keep large particles and chlorine away from the membrane, which is the most sensitive and expensive part of the system. By stopping sediment and chlorine early, the kit reduces fouling and maintains membrane throughput and lifespan.

• Stage 1: 5-micron sediment filter traps dust, rust, and suspended particles.
• Stages 2 & 3: 10-micron carbon blocks remove chlorine, tastes, odors, VOCs, and common chemicals.
• Less frequent membrane replacement because the RO membrane encounters cleaner water.

What contaminants does the 75 GPD membrane remove?

The 4th-stage thin-film composite (TFC) membrane is rated for 75 gallons per day and targets dissolved solids and a broad range of inorganic and organic contaminants. It significantly reduces heavy metals, some radioactive elements, and many other dissolved substances that pre-filters cannot capture.

• Removes contaminants such as lead, arsenic, fluoride, chromium, and radium.
• Reduces dissolved solids that affect taste and safety of drinking water.
• Engineered for consistent flow at household use rates.

How does the system restore taste and alkalinity after filtration?

After the membrane and a post-carbon stage polish the water, a high-purity coconut shell carbon filter removes any residual taste or odor from stored water. The final inline pH+ stage adds food-grade calcium carbonate to raise pH and impart a mild, mineral-balanced finish.

• Stage 5: Coconut shell refining carbon eliminates residual tastes from the tank.
• Stage 6: 10" alkaline inline calcium carbonate filter increases pH and adds minerals.
• Quick-connect fittings simplify installation of the pH+ inline filter.

How often should parts be replaced and what should I expect from maintenance?

Routine replacement intervals keep filtration performance high: pre-filters are typically changed every six months, while the membrane and final carbon stages last longer under normal household conditions. Regular replacement prevents clogging, preserves flow rate, and maintains consistent taste and mineral balance.

• Pre-filters (stages 1–3): recommended every 6 months for most homes.
• Membrane and post-carbon (stages 4–5): expected service life of 2–4 years depending on feed water quality.
• Alkaline inline filter (stage 6): replaced per manufacturer guidance to maintain pH enhancement.

Who is this for? The FILTER-MAX-ESPH set is intended for owners of the APEC Essence ROES-PH75 under-sink reverse osmosis systems who want a full, manufacturer-matched replacement kit. It suits households focused on reliable contaminant reduction, taste improvement, and mild alkaline remineralization without altering system plumbing. Choose this kit if you want straightforward, OEM-compatible parts that are easy to install, maintain consistent water output up to 75 GPD, and restore the original performance of your APEC RO system.