Classwork 14/6/06

Yr10 Progress on SC Task 2.
Management Teams- tested pH, Carbonate Hardness and Ammonia levels in Tanks 1-4 & 7.
Adjusted water (by replacement) of Tank 7. (see data results)
Set up Powerhead filter/pump to Tank 7 & re-located heater from Aquarium 1 to Tank 7 in readiness for Yabbie transfer.
Transfered 1 Yabbie as test.

Planted 'out' Chrysanthemums from pots to garden plot.Rainwater Tank FULL!
Yr 9 to continue as above.

* FULL Data of test results will be published shortly
Tank 7
pH 9 Hardness 200 Ammonia OK
* Hardness caused by earlier additive of Bi-Carb, Alkalinity HIGH: Yabbies need calcium for shell production will soften water with exchange.
Exchanged approx 50% of water (200l)
pH 8.5 Hardness 110 Ammonia OK

Tanks 1-4
pH 7.5 Hardness 80 Ammonia OK