Hello, I have a male double tail betta. He is in a new 5 gal tank. I think he has fin rot I tested my water and the nitrates are high (over 40 ppm!) because my tap water's nitrates are high. Currently there is a pothos plant in the tank to hopefully reduce nitrates. I'm going to head to Petco to get some plants for the tank today as well. The tank is not cycled yet, but I use prime with tap water for ammonia (also high in tap water! +1ppm) and put safe start in the tank. What can I do for my poor betta? He is eating well and is swimming around but his fins are bad. Will they grow back? Is there anything at Petco I can get to help him?