Hi I am new to this site. But U have had a tank for about 7 months.
I had a 10 gallon tank with 2 albino Cory catfish, 1 rainbow shark, 1, silver tipped shark, and 2 tiger barbs. They all lived happily with no issues at all for 7 months till a few days ago I decided to go to a 20 gallon tank so...