Water quality and water testing

It is almost impossible to overstate the importance of water quality to fish health. Equally it is impossible to assess water quality by simply looking. The only way that we can be assured that conditions are right for fish is to regularly test for the important water parameters.

pH

Test every week – more frequently if the system has been disturbed or medicated. The time of day when ponds are tested is important because of the effects of photosynthesis on the pH.

Ammonia

Test every week – more frequently if the system has been disturbed or medicated

Nitrite (NO2–)

Test every week – more frequently if the system has been disturbed or medicated

Nitrate (NO3–)

Once monthly in freshwater. every week with marines, corals and invertebrates

General Hardness

Once monthly

Salinity

Weekly in marine tanks

Copper

Necessary when copper treatments are used

Phosphates

Optional – but used in conjunction with nitrate testing it gives an indirect measurement of background pollution. fresh water & marine

Dissolved Oxygen

Use when water temperatures increase. It is important to try and take a sample from within or under the filter media if possible, as filter levels may be lower than in the pond.

Additional Tests

Other mineral tests are available for marine. i.e. calcium etc. Go to specialist dealer for information