The summer tub pond has done well, it is now the beginning of September 2017 and over the past 4 days or so the water has gone crystal clear. I am not sure how algae blooms work but the only thing that has happened is that the days have been less bright and the sun is now lower in the sky resulting in less light.
The water temperature is 17 deg C at 09:00 the air temp is about a deg higher. The fish still seem very happy dashing about and feeding. I have an aquarium cycled in the greenhouse ready to receive them if the temperature drops much further I will leave the tub filled though as the resident Toad and Frog are still making use of it.
Approx 20 fry in the green house grow-out tanks are doing well. The external BOYU filter is working well, keeping the water in that tank very clear. The fish in the other tank with the Alfagrog home made filter are doing well but the water is slightly cloudy so I will have a go at making an airlift sponge filter to provide mechanical filtration.
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