Friday, March 13, 2009

Topping-up water in the 'Ponds'. Work in the ARC!

Big day today... the whole class worked well. Thanks!

The pump had continued pumping water from the rainwater tank for P1-P3. The watertank is now at approx. 1/10 capacity... we need rain
Cody did a great job, with some help to clear the Nth facing gutter of leaves, rocks and rubbish to enable the next rainfall to collect clean roof water to our rainwater tank. The 'first flush' device was explained, cleaned and replaced after we flushed the gutter. The photos below show students topping up their 'Ponds'. Not much water had evaporated, probably due to the lids (even with air holes). Observations of the 'ponds' and Australian Fresh Water Mussels indicate that almost ALL had buried themselves in the gravel. Water is very clear- maybe the mussels are doing their job in purifying the water... getting close to the introduction of Yabbies.

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