Perc Eggs!

[spoot]

So a couple of days ago, I noticed that our female Perc was rather chubby. At first I thought that she had just eaten a little too much the past few days, but in the back of my mind I hoped that she had eggs. Well today, I checked out the pair's favourite rock and noticed and shiney orange mat on the back side The male has been blowing on the eggs and such. He also won't go far from the eggs and always checks back on them.

This pair is at least 3 years old and has had previous batches of eggs with a previous owner. I'm wondering how likely I will get viable babies without doing anything extra, or will I need to catch them once they hatch and administer a special feeding regiment.