temp for tank..

[prec]

is temp ard 30-31deg suitable for tetras and cherry shrimps? will they die as a result?

[juggler]

Usually the ideal temperature is much lower. Check out theor requirements at http://www.fishprofiles.com/profiles...p?id=Characins

Prolonged temperatures of 30C~31C may stress the fish. Try to use fans or chillers to cool the tank.

[anaconda]

30-31 the shrimps might die...fish should still survive

[prec]

thanks. i was just asking that because i tot of switching off my fan at night since my parents are complaining about the escalated electricity bill. :P

[juggler]

Is your fan AC or DC type? Very easy to determine the amount of electricity used.

The electricity rate from Singapore Power is about $0.16/kWh or less. See your PUB bill.

If your fan is DC and the rating given is say, 0.14A, 12V, then the wattage is 0.14x12 = 1.68W. If turned on for 24 hrs per month, the kWh usage is 0.00168x24x30 = 1.2 kWh. So monthly usage should be 1.2x0.16 = $0.19.

If your fan is AC, then see the wattage. If it is 20W, using the similar calculation above, the monthly usage should be 14.4x0.16=$2.30.

So you see, it isn't very much. If you had used more of the air-con lately, that should be the culprit.

[prec]

i guess my lightings are the one doing the "good" job of the bill