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Water quality in Christchurch


TM

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This is a email sent to me from the Christchurch City Council

On Wed 3rd November 2004.

Thought it may be of interest.

It shows the ave of the water quality in Christchurch

Hi Tim,

Water data as requested:

Also, the water at your Beckenham site is likely to have a variable pH due to variable water sources, aeration times etc. but typically this will be an average of 7 - 8. Phosphate <0.05ppm Reactive silica is 16ppm

At Stanmore Road the phosphate level is <0.05ppm Reactive silica is 20ppm pH is 7.8

Hope this helps,

Regards,

Gareth Phillips

A typical average analysis of Christchurch Water

pH: 7.8

pH after aeration: 8.2 g/m3

Acidity to pH 8.3 (as CO3): 1 g/m3

Total Alkalinity to pH 4.5 as HCO3: 52 g/m3

Turbidity (TU): Less than 1

Nitrate Nitrogen: 1 g/m3

Sulphate: 5.0 g/m3

Chloride: 5.0 g/m3

Calcium: 2.0 g/m3

Fluoride: Less than 0.1 g/m3

Magnesium: 1.5 g/m3

Potassium: 1.0 g/m3

Sodium: 6.1 g/m3

Reactive Silica (as SO2): 16.0 g/m3

Total Hardness (as CaCO3): 45 g/m3

Conductivity at 20ûC (ms/m): 10

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  • 1 month later...

Hi we have two adresses in the cashmere beckenham area, with a total of 26 tanks. (I think)

we are breeding fish intensively, and use nothing but tapwater for virtually all of our tanks. when we set up a new tank we use filter squeezings from an established filter, but don't bother with any chemicals.

water changes are done with the carden hose through the window.

the only alterations we have ever made to water is to harden it for our CO2 injected tanks, or if breeding a fish which needs hardened water.

with your permission I would like to take a copy of the concil information that you have posted.

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