I do not use one on a regular basis, but I keep one on hand for emergencies. My filter produces enough surface agitation to sufficiently supply the tank with oxygen.
It really depends on tank size and type of fish.
uhh hard water.xDD
Research on how to look after the different species of tropical fish and then decide which species you wish to keep. (can you afford the expence?) Then get your tank and everything else set up at least 3 weeks before buying any fish.
All fish need a minimum of 1 gallon of water per 1 inch of the fishes length. (For Tropical fish the water must be heated to a specific temperature range to suit the species.) The tank also needs a permanently running cycled filter to biologically convert the poison (Ammonia) the fish create (by living, pooing and breathing in the water) into harmless Nitrate. A tank also needs to have at least 50% of its water replaced every week to avoid a build up of Nitrates. Fish need to be fed at least once daily but twice is much better. A Thermometer is necessary to enable you to check on the temperature. The former things are needs and are essential. The following things are good to include. Live plants to use up Nitrates and provide Oxygen. Light is required for the plants to live and grow. A close fitting cover glass is good to prevent too much water loss through evaporation and to stop fish from jumping out. Nets are usefull to catch fish when required and magnetised glass cleaners are usefull for removing algae from the inside of the aquarium.
You need to know if the fish are Community fish, Semi Aggressive, or Aggressive. You'll also need to know how big the fish will get when full grown, so you can figure out how many fish you can fit in your tank without over crowding
The desire and capacity to research and learn also the free cash/money available to purchase the things needed to successfully keep tropical fish.
To keep tropical fish alive, you should,
keep them in water,
feed them
and i dont know what else
None, goldfish are cold water fish, so having a tropical fish as a tank-mate just wouldn't work because tropical fish need to live in warm water.
Tropical fish.
All salt water, fresh water, and tropical fish are cold blooded.
Jack Dempsey's need the same water as any other tropical fish, no salt, just warmish water (72-77F would be ideal) with a few drops of water conditoner.
It depends on each type of fish. Certain tropical breeds need their own temperature and pH level. Goldfish are less fussy, however research into your breed of fish and find out what temperature it is best suited at. The usual safe temperature for tropical fish is between 22 - 28 degrees centigrade. However I think cold water fish are more flexible.
It depends on what type of tropical fish you are intending to keep; it ranges from 6 (freshwater & discus) to 8.5 (for cichlids).
This depends on the type of fish
Fish can live in all types of water, depending on what species they are. Hope this helps! Also, if it is a fresh-water fish it should not be placed in that type of water in the first place.
it depens on what type of gold fish u have ( ordinary or fancy ) The simple answer is no. You can not keep tropical fish and coldwater fish (goldfish) successfully for long. Amongst other things, Goldfish run out of oxygen and tend to stress when kept too hot for too long. The metabolism of Tropicals slows down when the water is too cool and their organs simply shut down and the fish die.Tropical fish and goldfish prefer different temperatures; goldfish like to be at around 70F (room temp), whereas tropicals need more in the 78-84F range, and so putting them together can be problematic in that either the goldfish or the tropicals will be outside their normal temperature range, which can lead to stress and disease.
Its a coral eating, tropical fish in the subfamily of the wrasse
what type of aquarium tropical (heater needed) cold water or marine (saltwater)
fresh water fish will but saltwater wont plus it all depends on what type of fish you have if you dont know youre type of fish look it up online in google :D gald to help daniel 15 years old