When we were kids my dad had a big pond & that didnt have a filter in it. Just fred, our huge goldfish that my mom won @ a fair! wildlife came to that, but my worry is tadpoles, i have frogs that frequent the garden regulary (even found 1 in the green house on wednesday) & im hoping that they will use the pond to spawn. Will the fish put them off???
I have an old water feature that i was going to try & incorporate into the pond build as a seperate part for the spawn (if we get any) but im not sure if its going to be big enough. I think its all going to be a bit of trial & error next year with this pond :/