- Reaction score
- 1 year
Hi, I'm brand new to this site. I have questions about the temperature in my 20 gallon goldfish tank. It's filtered, heated, all the readings are perfect, ammonia 0, nitrite 0, hardness 7.2. I have 2 butterfly telescope goldfish in the tank. I know that goldfish are considered cold water fish. But on a warm day their tank can heat up to 80 at most and then it would plummet down. So I started keeping a heater in to maintain a steady temp. It stays between 72-74 for the most part. I was wondering if this was okay. My goldfish have been thriving, they are active and constantly growing. One even laid eggs without me knowing and I ended up with fry. Everything is pointing towards them being healthy happy fish with the warm temperatures. Every fish person I've talked to however is against a heater in goldfish tanks. What do you think?