donderdag 5 juli 2012

2012-07-03 20:30 hbos Algea starting to influence visibility

Weather : Cloudy / S wind 2 bft / Rain  0.3 mm / 1016.3 hpa
Divers : Patrick,Ted,Kacper, Axel
Goal : Visibility, Watersamples and skills
Max depth : 10.9 mtrs 
Duration : 67 minutes
Air temp :  18.9 celsius
Water temp : 18.4 celsius minimum
Fish: > 10 perch - smallerlouds of shrimp, less waterfleas.
Plants : not taken any notice
Visibility  : 3.5 mtr at 3 mtr depth, 4 mtr at 6 mtr depth
Yellow viz: same
Remarks : > 5 divers. Water is getting milky green. It looks as if algea growth is starting.
The CO2 is slightly increasing at 6 mtr depth according to sample results

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