Ok I have to laugh on this, I'd never heard the term till yesterday, have spent a few hours googling it and now it popped up as a topic here lol.
I have been doing this for years with my guppies and never knew it had a name. Until recently I had a 75 gallon that was mostly guppies with a few cories and a BN. The biggest tips I can give you?
Make sure you have plenty of cover. I prefer live plants because it gives the fry something to pick at food-wise as well as cover, which helps when they are literally bite sized. Anything is better than nothing, but floating and bushier ones are best, although when my jungle vals were really long the fry hid out among the floating sections.
Keep the adults decently fed. This sounds stupid, but I've had a few cases when I was gone for a few days (2-3) and they didn't get fed. Not usually a problem, but I found that I would have a noticeable drop in fry when I got back if they weren't older fry. I had entire batches wiped out like that.
Depending on how big your tank is, the filter usually doesn't matter. I had a canister filter in the 75 and didn't have any issues with fry getting sucked up. Way back I had a ten gallon and found a box filter and a nice size chunk of java fern kept it sparkling and everybody happy.
Keep an eye on your fish and cull them regularly. I let this slide for the first year, and ended up trading almost 80 for some cherry shrimp (not bad but if that deal hadn't gone down I would have been stuck with an awful amount of fish I didn't want). I was left with five, but from there I've easily built back up. Get rid of any deformed ones immediately, then cull for color and body type/finnage. And don't forget to add some new blood occasionally. For me with it being guppies it was easy because you can find them anywhere. (I'll admit, some of my guppies were found because it was a 'having a bad day lets go look at fish' sort of day lol)
Have a cleaning crew. I prefer cories because they won't eat fry and DO eat whatever hits the sand. Plus they kind of fill out sections of the tank that can be quite boring with livebearers. You'll still have to feed them too, but it just adds variety to every ones diet. That's all I can think of at the moment.
