hmm, personnaly, because you are using the slate, i would put the eggs in the rearing tank prior to hatch. Or, slightly easier and better. Just Fill the 10g rearing tank with tank water. But for this you'd need a bigger tank for teh parents, or a large sump. I recommend what i just said. Get a large sump (rubbermaid Tupperware) and use that on teh parents tank. When the babies hatch, at night, lure them to the surface with a flashlight. Then scoop them up and slowly pour them into the rearing tank that was filled with their parents tankwater