Reverse Osmosis
Reverse Osmosis (RO) water filtering is done by forcing the water under high pressure through a porous membrane. The holes in the membrane are large enough for the water to get through but trap larger particles which would be impurities . The "high pressure" part is the key as the holes in the membrane are so small that nothing would get through without it.
In terms of quantity, the efficiency of a reverse osmosis unit is around 25%, which means that of the water passed though the unit a quarter of it is purified. The remaining water is waste. After reverse osmosis the water if virtually free of all minerals. However, it is not advisable to add it to your aquarium in its pure state, as this can result in significant variations in pH. It is better to dilute it with tap water, in order to achieve water hardness in the region of 5 dH.

Most reverse osmosis units are equipped with pre filters that retain particles such as chlorine that could damage the membrane. The membrane is the heart of the system and must be closely monitored to ensure its efficiency and prolong its life. It is made of polymers and its pores measure around ten thousandths of a micron, allowing it to retain 99% of bacteria and between 85 to 99% of the minerals present in water.

The efficiency of a reverse osmosis unit is determined by the regular cleaning of the membrane to prevent it from clogging. Calcium carbonate of limestone is the most common clogging element. Normally a m embrane can filter about 25,000 gallons of water: or about 3-5 years of service before it needs replacing.

Reverse Osmisis & Water Purification Products

Aqua Medic Reverse Osmosis Unit (30lpd)
Aqua Medic Reverse Osmosis Unit (90lpd)
Aqua Medic Reverse Osmosis Unit (150lpd)
Aqua Medic Reverse Osmosis Unit (300lpd)
Aqua Medic Reverse Osmosis Unit (450lpd)
Aqua Medic Reverse Osmosis Unit (600lpd)
Aqua Medic Easyline 90 Reverse Osmosis Unit
Aqua Medic Easyline 150 Reverse Osmosis Unit
Aqua Medic Demineralisation Filter
Aqua Medic Ion exchange resin (1l)
Aqua Medic Ion exchange resin (5l)
API Tap Water Filter
API Tap Water Re-fill Cartridge