Now I look stupid, the eggs were mostly fine, maybe a small percentage duds which I suppose is normal, it was actually the tadpoles forming in the eggs, I just did not expect it to happen that fast, looked like the eggs were going splat.

Quite funny frogs actually, I had a set up with a shallow dish and shallow waterfall. Noticed they were making loads of noise and caught the male and female inside the waterfall doing you-know-what. About two weeks later I decided to make a deep filtered pool, that night the noise was incredible (2 males and 1 female ) and eggs turned up in the morning.... they are so clever!

Now theres about 20 little tadpoles (they remind me of goldfish fry) sticking everywhere in the pool and more getting ready to come out.

Btw this article was really helpful, shame I didnt notice the pictures before I commented