My last 3 trials were all 60%. Non selected were always 40%.Well see, you HAVE to hatch because you are doing experiments to benefit the chicken owning community. If your gender results based on egg shape proportions continue to come out like they did the last time, you'll have something of great value to contribute. Can't do that without lots of trials.
Mine was about 2' x 6' in the corner of the 10' x 12' coop. Given I had only 7 chicks, it was far bigger than necessary but I had no idea how long Zorra would keep them in there at night (2 weeks), how long she would mother them (2 months) or if they were going to need to use it as they got bigger (nope).
Your 18 sq ft should be fine. The chicks will be ready for the full coop and no MHP by the time they are 4 weeks old, if not sooner. Hopefully they will be integrated with the rest of the flock by then.
How soon will you be putting them into the coop. Sooner is better. And the more space you can give them, the better.
Loaches are a horror to catch, unless you know how to think like a fish. The last few times I bought them, I insisted on catching my own: set the net on the floor in the corner, with some gravel in it, stuff a few plants in it. chase the fish into the net with a second net.I thought about that. Kind of hard to see the chicks if they are all sleeping in the cave when people come to buy. But the cave is easy to pick up so the chicks can be seen and collected. Ever buy tropical fish? Especially black loaches? Those suckers hide IN the gravel bed and are faster than lightning but somehow the people at the store can manage to catch them with some effort. Chicks in a MHPB equipped enclosure would be cake by comparison.
Ashley, do you mean using a HP for an incubator? That's been done by Beekissed. She used a HP over a nest that she constructed with a cardboard box, soil, and some hay with the HP over. But, for around $20, you can build a very reliable incubator, using mostly stuff that you would have kicking around or that you can pick up at yard sales. The only real cost will be your thermostat, which can be purchased as cheaply as $8, depending on what kind you use. If you could wire a lamp with instructions, you can build a bator.Anyone ever considered using the MHP in an incubator? I've only just started my flock but already I'm fascinated with incubating and hatching. I don't want to spend a ton of money on an incubator since we just dropped $500 on a new DH-built A-frame coop.