Applied Membranes Inc. AAA-ROPH-50 (6-Stage Alkaline, 50 GPD)

How often do the filters need replacing in this system?

The sediment and carbon pre-filters typically require replacement every 6-12 months depending on water quality and usage. The reverse osmosis membrane lasts 2-3 years under normal conditions. The alkaline mineral cartridge should be changed annually. Regular replacement ensures optimal performance and water quality. Monitor your water's taste and flow rate as indicators for filter replacement timing.

What contaminants does this system remove from water?

The system removes up to 99% of total dissolved solids including arsenic, barium, cadmium, chromium, copper, fluoride, lead, radium and selenium. It also eliminates chlorine, sediment, rust, sand and organic compounds that affect taste and odour. The reverse osmosis membrane is particularly effective against heavy metals and dissolved minerals that standard carbon filters cannot capture.

How much space is required for under-sink installation?

The system measures 45.7cm length, 38.1cm width and 68.6cm height, weighing 10.43kg when fully assembled. You'll need adequate clearance under your sink for the storage tank and filter housing. Most standard kitchen cabinets accommodate this system, but measure your available space before installation. The faucet requires a hole in your sink or countertop for mounting.

What is the difference between this and standard reverse osmosis systems?

Standard RO systems typically have 3-5 stages and remove minerals along with contaminants, often producing acidic water. This 6-stage system includes an alkaline mineralisation stage that adds beneficial minerals back into the water, raising the pH and improving taste. This creates healthier drinking water similar to natural spring water rather than demineralised RO water.

How does the alkaline stage work and what minerals does it add?

The sixth stage uses natural mineral cartridges containing calcium, magnesium and other alkaline minerals. As water passes through these minerals, it naturally increases the pH level and adds beneficial elements back into the water. This process mimics how natural spring water acquires minerals from underground rock formations, creating better-tasting and potentially healthier drinking water.

What maintenance is required beyond filter replacement?

Regular maintenance includes sanitising the storage tank annually and checking connections for leaks. The system operates automatically once installed, but you should monitor water pressure and flow rate. If flow decreases significantly, it may indicate filter replacement is needed. The included filter wrenches make cartridge changes straightforward without requiring professional service.

Can this system handle high TDS water sources?

The system is designed for water sources with TDS levels up to 500 PPM (parts per million). If your water has higher TDS levels, the filters may require more frequent replacement and the system's efficiency could be reduced. Test your water's TDS level before installation to ensure optimal performance. Very hard water may benefit from a water softener pre-treatment.

Is professional installation required or can I install it myself?

The system includes a complete installation kit with detailed instructions, making DIY installation possible for most homeowners with basic plumbing skills. You'll need to connect to your cold water supply line and create a drain connection for waste water. The kit includes all necessary fittings and the designer faucet. However, if you're uncomfortable with plumbing work, professional installation ensures proper setup and warranty compliance.