Tracy wrote: Are tadpoles good for my pond? My fish died with a white film over their eyes I was told it was because of the tadpoles.
I suppose it is possible, but I find it a bit doubtful. Tadpoles (the toad kind) have toxins on their skins so fish won't eat them, and they don't. I suspect you will find your fish died of something else, like foul water, over feeding or some chemicals getting in the water. If they were new fish, it's possible they were sick when you bought them.
Change out 25% of the water. Don't forget the dechlor. Be sure you buy fish from a reputable fish store and not a big box retailer.