This is day 3 with my new betta in my first ever tank. He was pure white on day 1 and now this red spot on his fin has shown up so I just want to make sure it’s nothing bad! I know they can change colors but i’m not sure if that’s what this is.
https://i.redd.it/ov5fv9coc4hg1.jpeg
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• Tank size: 6 Gallons
• Heater and filter? (yes/no): Yes
• Tank temperature: 78°F
• Parameters in numbers and how you got them. Key water parameters include the amount of ammonia, nitrites, nitrates, and pH.: Ammonia: 0, Nitrites: 0, Nitrates: 10, pH: 7.0
• How long have you had the tank? How long have you had your fish?: Tank for 5 weeks, fish for 3 days
• How often are water changes? How much do you take out per change? What is your process?: Only done one water change right before getting the fish so far and it was 25%. I plan to do weekly.
• Any tankmates? If so, please list with how many of each: 1 Nerite snail
• What do you feed and how much: Fluval bug bites and blood worms so far and once a day. Only 3-4 at a time.
• Decorations and plants in the tank: All live plants, some anubias, java fern, amazon sword, amazon frogbit, bacopa, and rotala. Dragonstone and driftwood too.
Forgot to say I use the API master test kit for testing and for water changes i just use the tubing that came with my gravel vacuum because the attachment is way too big
i’m afraid that red spots on white bettas mean fin rot. i always hear people say they use seachem kanaplex to treat that. i don’t have that in the netherlands, so i use manaus trichosal.