overstocked?

Hello everyone! I am new to MFK, and mid to large sized fish. When I got into the fish keeping hobby 3 or so years ago I immediately gravitated to nano fish and have a number of tanks ranging from 5.5 to 55 gallons filled with them. So far I have stuck to nano fish in all of my tanks except for...

Hey guys, I have a 280g tank with an 84g undersump system. My Tank is stocked with: 3x 10in Cichla Monochlus 1x 9in Oscar 1x 9in Datnoid 1x 8in Sturgeon 2x 18in Silver Arowana 7x Silver dollars Tank size is 72x30x30in. Hope to get some response from you guys and if ever I would need to reduce...

My tank is 5ft by 2ft by 2ft 1 Oscar 1 red terror 2 red sevrums 1 jd 1 fether fin catfish 1 vegia