Green water!

I am now able to report that we have had a crisis and have come out the other side! Last week we had a downpour which lasted several days. We had water going into the pool from our roof. Suddenly the pool was green, and over a few days it became very green. It was so green we couldn't see the bottom at all. However we remained calm and after a few days it began to clear. Now it is almost fully clear again. Whew. We don't really know the cause of the greening, but it will have something to do with our already high phosphates. Perhaps some water flowed over the edge in a down pour bringing soil and more nutrients into the pool. Perhaps it was simply run off from the surrounds of the pool with bird droppings. But the amazing thing is that the biological system, despite not yet being fully established and stable, eventually righted the situation without any chemicals or other help from us. Today we had our first froglets emerging from the water onto the plants. They are tiny Limnodynastes peroni, about 2 cm long. That's great. Now that is evidence of really good water!