OK so this morning I cleaned our small tadpole tank, I let the water sit in a large clean bucket for a few days, washed the stones and put the same stones and plants back in with the 'aired' water. Since then they have gone crazy - they are approximately 2 weeks old and don't have any legs yet. They're swimming into the corners of the tank when I come close and are all swimming full on crazy around the top and grouping in the corners and looking at me.
I have not been drinking or taking drugs for the record.
Anyone speak tadpole? Please don't tell me I'm going to have nine little corpses in the morning, DD will be distraught!