Yea. Better than an airstone i use a sponge filter which runs off of an air pump. Also the tank that you use for the fry u need to paint three sides of it black. Clown fry are very light sensitive. I never prepared new water for the fry tank. I filled my fry tank with water from my big tank where the eggs were layed when i did a water change. That way they are in the same exact water as the eggs were