My betta has been lethargic for 72 hours now and I don’t know what’s wrong. I am new to betta care and I need help knowing what I’m doing wrong. More info in comments.

30cm cube tank (about 7 gallons) Heater and filter is present 78F tank temp Parameters are measured with the Freshwater Master Test Kit: Ammonia: 0 ppm pH: 7.0 Nitrite: .5 ppm Nitrate: .5 ppm The tank has been set up for two weeks, we have had the betta for one weeks. Water changes has been sporadic in the last week and we do not have a routine down. We have changed the water three times in the past week and we empty it halfway. Tank mates are one african dwarf frog and four nerite horned snails. He is currently being fed two small pinches (one in the morning, one at night) of omega one beta buffet pellets. He has boiled rocks and driftwood for hardscape. All of the plants are real, but because it is my boyfriends tank I don’t know all their names. I do know there is java moss from Petco, which was added the day before he got sick.

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