what size heater for 20g tank??

[iluvguppies]

Do i need a 50w or a 100w or what for a 20 gallon tank???

Thanks!

 

[DarkWolf]

A 50w should do fine but will stay on more than a higher rated one. I find that higher rated ones give a more stable temp in tank. Not like a higher rated heater will cook the fish or anything, they're all temp controled..

 

[ChicoRaton]

I'd go with the 100w. it aalso depends on how much you're going to raise the tank temp above the room it's in. if it'll be more than 10 degree F I'd go even higher than 100w.

 

[daveedka]

I'd go with two 50 watts, It is a little more than needed, but IME two is always better than one, and if one craps out the other will be big enough to prevent dissaster.

 

[hle_81]

IMO, a 100w heater is needed for a 20 gal

 

[125gJoe]

Originally posted by hle_81
IMO, a 100w heater is needed for a 20 gal

I agree - besides, when you upgrade, you only have to buy one more 100 watt heater to have both heaters going on that larger aquarium...

 

[ChicoRaton]

But then you'll want to buy ANOTHER 100w heater to put back on that 20g so you can put more fish in it