Oh!! Now that is a very interesting detail that I completely would have missed. Thank you! I will add it to my notes. Our pair is taking a break from spawning (the female is from 2005 so likely 20 years old). I am going to take advantage of the break to set up the fry tank and do a trial run so I can get used to the procedures. It won't be a total replication of course without the fry, but I just want to get my feet wet before we get a hatch.Yeah the sponge itself isnt on, it just has the seeded bacteria on it from the parent tank. You dont want it on until after meta, the fry prior to kinds jus float with current mostly so would get stuck to the filter.