The pipes are really easy for the most part. I have two hatcheries set up, you can buy them or I use old water bottles with the tops cut off. I have an air pump, tubing goes to a tee that has shut offs for each of the valves. I run tubing from two of the valves to the bottles. I dip about 1/2 bottle of water from my tank, add about 1/4 teaspoon brine shrimp eggs, swish, and insert the tubing to the bottom and let them cook. The eggs hatch time is shorter if the temps are warmer. I live in FL and keep mine outside, in the winter, I move them in and put them on a heating pad. Each night, I pull one bottle and place it on my desk and turn on the desk lamp. While waiting for the shrimp to come to the top and the shells to rise or fall, I mix a new batch and put it on the bubbler. It takes about 10 minutes to seperate and you can see the shrimp moving to the light, I turn off the filter and use a baster to add the shrimp to the tank. The pipes will hunt and readily accept the bbs. Once I have pulled a feed out, I add a few drops of marine snow and put it back onto the bubbler for the morning feed.
I have been asked to start weaning some of mine off to frozen foods. I have sold dozens and dozens of my babies. I don't mind hatching the brine, it's all part of my routine and my pipes are very healthy so I really don't see a reason to change.
I did put a chaeto ball in their tank, they love to hide in it and also to hunt the pods and bbs that hide there. They are actually pretty active and have personalities. I am not sure how they would do with some more aggressive fish, I would probably be a little concerned with the flounder, depending on the size. I have an assortment of mini gobies in mine that along with a corky finger and some gorgs, clean up the excess bbs.
If you have any questions, I'd be more than happy to offer my experiences. I have had dwarf seahorses and pipes for about 6 years now.