Thanks for the replies. They are just a mass of wriggling blobs still. Hopefully should be swimming in next 2 days. They have laid eggs a few times but they have previously been eaten - this is the first time they have managed to keep them away from the others.
You don't have to worry about that if you're planning on leaving the fry in with the parents. Just feed the parents their normal-sized pellets and they will start feeding the fry when it's time... they will crush the food and you will see it coming out of their gills on top of the nest.
Nice! I'm surprised the pleco didn't eat all of the eggs. I agree with Cacichlids, the parents will usually make sure the fry are fed. There are also fry foods like First Bites that may help too.