Okay, So it all started off with Finrot for everyone, Squirt, Leo, Cosmo, and Gurgle.
Gurgle has these red marks all over his face, and even bigger marks on his gills. I dont know what could of caused this. It started today. The only changes that i made was that I put in a plastic plant that used to be in my adf tank. and the tank was kinda gross. It might of been that. Also i put in the underground filter that comes with the tank. Idk. I took out the plant, and unplugged the filter.
Anyone know what could cause this.