[ymm]

Hi Aland & Bullseye,

Thanks for your replies.

I'm pretty sure the pond hasn't been contaminated, but I must admit, we haven't used the pump much lately, although I usually top up the water with the hose every few days, so maybe this is why. Now they're all much bigger, I'll keep the pump/fountain going, (I was worried about the little tadpoles being sucked into the pump!).

We also have loads of dragonflies around too, which is great, but I never thought about their nymphs doing any damage.

Hopefully, we won't find any more dead frogs now, but really appreciate your advice.

Cheers, Yvonne