I have 4 adult albino cories and would like to get them to breed. One of cory lay eggs once a year ago, but then stop. I eggs never hatch. Yes, there are 2 male & 2 female in the tank. My thought would put them in the 10 gal breeding tank without the gravel and feed them well. Of course, water change with cooler temperature trigger spawn. The reason for bare tank because the albino bristlenose will be ready for breed next year. Have any breeding cory in the bare tank?