Last time I tried this only 2 survived and they moved out of the tub into a 3 gallon plastic aquarium our betta used to live in while his new home was set up. I am counting 13 or 14 in each tub so as soon as the new heater gets here I am setting up a 10 gallon with 5 gallons of water for them. I started a sponge filter in thier parents tank soon after I pulled the eggs. Besides some moss and duckweed is there anything else they need? I have a old fish cave and a rock with a hole through it.