Heater/thermostat units come in many sizes. I have found that pet shops charge far too much for them here in Australia so I always buy mine off the web. for example a 300 watt heater/thermostat at the local pet shop was $Aus98.00 +. On the web after searching a bit, the identical heater/thermostat cost me $Aus35.00.including postage. My advice is to Google and look around and compare prices.
Typically heaters are needed for tropical fish tanks. However, if you could guarantee the room temperature where the tank is located will be maintained at the needed temperature for your fish, then you don't need a heater. Most tropical tanks need to be maintained at temperatures of 72 to 80 degrees Fahrenheit, depending on the types of fish in the tank.
Typically 1 gallon tanks are far too small for even flat submersible heaters as the ambient temperature in the location where you keep it should warm it up (or cool it down!).If you are unable to keep an even temperature, they do make tiny flat heaters for 2.5 to 5 gallon tanks
Not all heaters can go inside a fish tank. The heater must be specifically made to be put in an aquarium. You can order one off the internet as long as it is made to be put in water or you can get one from your local fish or pet dealer. It would be better for a first time fish owner to get one from a pet dealer instead of the internet.
depends on where you buy it from
Fish tanks were not 'discovered' they were invented.
yes it is
Tropical fish.
The rule to follow for freshwater fish is 1 inch per gallon. For goldfish is it one fish per 10 gallons, and for bettas it is 1 fish per 1 gallon. Fish bowls really are not the best home for any fish. Fish need to be kept in tanks with heaters and fliters.
The Roman empire had a very large industry making fish tanks, before that, the Chinese had been raising fish in holding tanks for about a thousand years. Before that, people were probably building fish tanks since before we understood how to make fire.
fish tanks
it depends. for most fish it should be pH7-pH8 but some species like it at pH6
100 rupees