If your aquarium water is consistently too warm for the species you are trying to keep, you can buy an aquarium chiller. These devices cost a fair bit more to buy than a heater, but not that much more to run. The main disadvantage of chillers, other than their expense, is that if you cool the water by more than a few degrees condensation will form on the outside of the glass. Don't use a wooden stand or a stand made of metal that might rust if you are planning on using an aquarium chiller.
Dpends on the size of the fish its one inch full grown for every gallon
You can definitely do that, but you haven't made it clear that you have cold water in the tank before. If you can keep the water temperature at 72 F, then you can keep both cold water fishes like gold fishes and non-aggressive community tropical fishes like gouramis, platys, mollies, algae eaters etc with gold fish.
IN WATER!!!! (TANK!!)
No. The temperature variation will kill one or the other. (Too warm for cold water fish, too cold for tropical fish)
The only difference between a cold water tank and a tropical tank is the temperature of the water. There is no other difference. Different species of tropical fish require different temperatures. The range is from around 65F for Whitecloud Mountain Minnows up to around 85F for Discus cichlids. Not all tropical fish, however need to be in a heated fish tank. For example, sword tails have been adapted to live in cold water. The basic rules for keeping fish are as follows:1 inch of fish needs a minimum of 1 gallon of water, every tank needs a fully cycled filter running permanently, every tank needs to have at least 25% of its water replaced every week. If you keep to those rules, your fish has quite a strong chance to live a long happy life. All fish are different and some might be born as weak or unhealthy ones and may pass away no matter how well you keep them. If you don't follow these rules, your fish can be guaranteed to have constant problems with their health.
Not unless you had another fish in there.
No, if they are cold water it will probably kill the fish but hot water, maybe
No cos gold fish are cold water fish and star fish are sea water
fish do not die in filtered water instead they will de if there is no filtered water try ussing one of the fluval brands for the size of your tank. maybe you did not cycle the tank before you add fish. how big is your tank and what fish o you keep?
Cold Fish are quite happy with room temprature water. If you leave the tank for about 5 days it should definatly be ok to put your fish in. About the ph.... i honestly dont have a clue! hope this helps a bit...(probably not very much) x
Yes u can, they would actually thrive!
you can fish the fish out of the tank with a net or a cup and keep them in a bowl with some water that came from the unclean tank, until the next tank is ready for their arrival. So when you have the next tank ready, you can just take the cup and dump them in with the water that you left it in when cleaning.