Angels breeding how to control

Hi All,

My angel fish pair have spawned three times in the last 30 days. So far, by
isolating the eggs and carefully pipetting the wigglers from the
unfertilized eggs, I have managed to bring past the wiggler stage 10 and 9
fishes from the first and second spawning, respectively. VERY NEAT!!! BBS is
the only way.
I am grateful for these additions, but am beginning to worry about the
parents... how much longer will this go on?
How can I better control it, temperature?


Thanks for the replies!