Basically I will have 2 trickle's with a pump feeding water back to all the tanks which will have power flows. As most of you know it is bad to bring up young with adult fish as the adults will secrete a growth inhibbiting hormone which may stunt the growth of the young. My tap water is at a ph of 6.8 and kh 2 which is quite nice. That is about right for Discus although they will tolerate quite a range as long as they have been given a chance to accustomise to the conditions. The only problem with hard water is eggs will have trouble hatchinng due to the pressure on the membrane.
Hard water is actually better to use for bringing up young by the way.
Umm, where am I. Hangon I'll have to pause. Now the temp in the hatchery will be pushing about 84 which is about right. Over 84 is a bit of a waste as well. Feeding will mainly be with turkey heart which is great. I like to use acombination of foods, and use Brine Shrimp, although rarely because of it's poor nutritional value, blood worms once a day, and live black worms occasionally as these are great.