Angel Fish Have Spawned

I am becoming convinced that the work on testing and water changes is worthwhile as my angels spawned yesterday just after a 30% water change and glass and gravel clean. Never happened when I kept them back in late 60s early 70s.
They have laid the eggs on a broad leaf and set up a no gocube around it. The third angel banished to otherwise tank. It is amazing watching the care of the eggs by both parent fish and how they are persuading others to leave the area. The cardinal tetras however are managing an occasional meal of egg but all part food chain I would like to see some fry though and what care they give to them. Feel second tank syndrome coming on and this may win Linda over as she sees the eggs disappearing

Hi Sue we have been having that conversation today about the third. It is staying out the way but reading today now realise they are monogamous therefore they might make it difficult for what I assume is another female as there has been no obvious aggression guess watch this space. They have now cleared all the obvious white eggs which I understand are infertile and concentrated rest as a clump of 50-60 from the 100+ I estimate last night One parent is a more of a gaurd than the other but we have been out so they may be taking turns but only seen such attention before when I bred a pair of Siamese fighters many years ago and of course it was the male only in that case. Fascinating!!!