use such jar can liao


temp? overseas cold thats y need heater, in msia we dont need those.. normal temp should b alright..
no need filter nor air stone.. water change regularly *at least once a week

jus use aged water will do..  i jus use normal pipe water with anti chlorine..

i use overnight paip water

because The temperature will gradually adjust to be the same temperature as in the bowl and the chlorine will evaporate. 

http://newaquariuminformation.com/aquarium.../betta-fish.htm

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Added on February 12, 2012, 12:21 am
taking care betta is simple. no need big tank (but if you want also can)
change half the water every week or two depends how dirty it can be
make sure u read bout diseases so incase anything happen to yr betta u can recognised it and cure it ealier

if want to prevent parasite get aquarium salt.

ovrall nothing much no need filter or heater

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Added on February 12, 2012, 12:24 am

ya u got r betta dy ?

the tank so small, i guess no need put air filter.. betta prefer calm water...