Used API Freshwater Master test kit:
Ammonia: 0 ppm
Nitrite: 0 ppm
Nitrate: 10 ppm
pH: 7.6
Tank: 5 gallons, Fluval Spec 5, added air stone, cycled since March 27, 2019, heated. Weekly water changes of about 30%
My fish is a male rose tail betta from Petco, and he is now 2 years old and I have...