sorry for the late reply,
this is whats in our water
very small amounts of Chlorine The most commonly used disinfectant, is added to remove harmful bacteria and keep water free from water-borne diseases.
Lime (
calcium oxide) and Caustic Soday (Sodium Hydroxide) Added to ensure the
pH (how acidic or alkaline the water is), is neutral.
Aluminium Is present in water from natural leaching from soil and rocks in the catchment area.
Aluminium sulphate is then added to remove sediments and make it clean and clear. It is then removed by filtration.
Potassium permangate, polymers,
activated carbon. May be used in the water purification process under certain circumstances.
The levels of all chemicals are controlled and do not exceed National Health and Medical Research (NHMRC) guidelines.
this was cut and pasted from our water authority website.
the ghost knife is fine and more active than ever!!!
cheers for your help anyways, i will add a treatment for the chlorine with water changes in the future but as i said earlier, my mates have had tanks for years and have never used them and still have some of their origional fish...
cheers again....