Angelfish are breeding!!

[Xtasia]

well my fish are fine by water changes.. but this all came about because my friend asked me to babysit her angel while she moved to edmonton... low and behold, her lone angelfish boy, fell in love with one of my young nubile fishy girls....

She didn't do alot to her tank so her boy fish is very sensitive... mine angels are totally used to water changes so used to my general noise and cacophony.

I noticed tho, whenever I did a water change, her boy would get really stressed out.. Right now I have a hang on filter and 2 weightd sponge filters, borrowed from SeaHorseFanatic... No substrate. 4 pieces of slate, some low maintenance, low light water sprite growing on the surface, and 2 tubes of PVC...

I haven't decided if I'm goign to tank raise them or not... My friend is only letting me babysit her boy-fish for 3 months so I want to be sure to get 1 batch out of them... And knowing that they ate the first batch, doesn't make me too inclined to let them try it on their own...

What do you think...?

My options seem to be..

grow them alone in the 20g..
grow them alone in the 1g inside the 20g.
let the parents try...

Would kinda be cool to se the parents do it.. but with my inexperience won't I spook my already cowardly stud into doing something horrible to the babies?