Practical Section

Water quality and filtration

Mains pressure forces water through the membrane.

Tap water enters the reverse osmosis unit.

Tap Molecules

~ In reverse osmosis, water pressure is used to reverse the natural flow of water molecules through a partially permeable membrane.

Leftover water can be used on the garden.

In normal osmosis, water molecules pass across a partially permeable membrane from a dilute solution to a more concentrated one.

~ In reverse osmosis, water pressure is used to reverse the natural flow of water molecules through a partially permeable membrane.

Pure water is drained from the unit

How reverse osmosis works

Leftover water can be used on the garden.

Mains pressure forces water through the membrane.

Tap water enters the reverse osmosis unit.

In normal osmosis, water molecules pass across a partially permeable membrane from a dilute solution to a more concentrated one.

Aquarium Plant Trace Elements

Above: A commercial R.O. unit produces water with a pH of 6.5-7 and no hardness. Buffers, trace elements, and nutrients must be added to it before it is able to sustain plant and fish life in the aquarium.

The COMPLETE guide to Aquariums

The COMPLETE guide to Aquariums

The word aquarium originates from the ancient Latin language, aqua meaning water and the suffix rium meaning place or building. Aquariums are beautiful and look good anywhere! Home aquariums are becoming more and more popular, it is a hobby that many people are flocking too and fish shops are on the rise. Fish are generally easy to keep although do they need quite a bit of attention. Puppies and kittens were the typical pet but now fish are becoming more and more frequent in house holds. In recent years fish shops have noticed a great increase in the rise of people wanting to purchase aquariums and fish, the boom has been great for local shops as the fish industry hasnt been such a great industry before now.

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