I've been lurking on here for a while now... I have a 165 ltr comm tank with a mix of gourami, hatchets, a fighter, algae eaters, red tail rainbow shark and a whiptail catfish, a 50ltr with angels and a 38 ltr with six guppies, two phantom tetras and threee old neons. It's been a real help for me to read all the posts here, especially the disease ones - I've been able to save many fish by knowing what to do quickly instead of having to wait it out, so thanks all who post great detail and pictures!!!