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Are my goldfish okay with cold water?

I have two regular old goldfish and I'm worried about them getting too cold. My room is quite cold (i like it that way), and I'm concerned about them freezing. I have my tank light on 24/7 just because the water in there gets so cold! But, there is a nasty green algae growing on everything and I think its from my tank light so I want to turn it off but I don't want my fishies to freeze. Is it okay to leave my light off?

Public Comments

1. They will be fine if it gets to cold they will go into hibernation. My gma has a pond that gets into the 30 f sometimes and she has never lost a fish due to it being cold. To get rid of algae you can scrub it off or they have stuff you can put in the water to kill the algae and is safe for your fish
2. your goldfish will be fine as long as the temprature remains above 68 degrees fareheit buy a 2 dollar thermometer and monitor their temprature as long as ur above that line theyll be just fine and dandy! =]
3. The Water should be room temperature. I would turn on the light and get one of these: http://www.petco.com/product/101390/Acrylic-Aquarium-Algae-Control-Pack.aspx?CoreCat=OnSiteSearch
4. Actually, the cold will not kill them. Goldfish are coldwater fish, and actually prefer it cooler than tropical fish. The light being on 24/7 though will cause them stress and will kill them. Not to count it is making algae grow. Fish are the same as any other animal in the world. They prefer the day and night cycles each 24 hour period.. So if your not good about waking up at the same time or remembering to turn the light on, you can get a timer from any petstore or even online. Set it and it will turn your light off and on for you at the same time each day... which will be good for your fishies. :-)
5. goldfish are cool in that they r indistructable when it comes to temperature...they r naturally found in streams rivers adn ponds ...24/7! ...6 hours max...and light wont help the heating situation much...if u want get a heater for the tank but its not really all that required...just helps keep the bacteria/fungus/all other fish health probs under control....umm out of curiosity how big is your tank and what kind of goldfish?
6. as long as the water does not drop below 10c they will be fine Never leave the light on 24/7
7. Reduce the photo-period,and the Goldies will be fine,they are cold water fish. They would even be OK if the water froze a thin skin of ice.(Any more would damage the tank). The algae is caused by too much light and probably too much food. Goldfish's digestive systems slow way down in water temperatures below 50F. Start doing small water changes and if the water temperature is below 50 don't feed them at all. Basically you have the ideal fish for a chilly room. Just remember that their appetites go down with the temperatures.
8. Goldfish enjoy colder temperatures, and unless you like Eskimo conditions in your home, room temperature should be fine and you can turn off the lamp. If you're worried, you can buy a thermometer and keep track of the temperature in the tank. Depending on the type of goldfish, here are a good range of water temperature: Fancy goldfish: 60 F - 75 F "Long" or "Feeder" goldfish: 55 F - 75 F (some may be able to tolerate colder temperatures, but I think these are safer ranges, especially if they're kept indoors) In terms of the light, your goldfish with be fine without it (as long as you don't have live plants, which need daily light). I hope this helps!
9. ideal goldfish water temps can be anywhere from the upper 50's to the mid to upper 60's. i doubt your room is any colder than that. you can safely turn your light off, it wasn't doing a whole lot to keep your tank warm to begin with.
10. You have nothing to worry about, goldfish are coldwater fish, unless your house under 50 degrees (which I doubt), you have nothing to worry about.