Heater - External Heater And Wattage Questions

[goldfish]

I'm thinking of getting a hydor external heater for my 50 litre (ish) tank. Firstly, is 200 watts too much for such a small tank? And does anyone know anything about external heaters? Are they any good?

Thanks

gf

 

[Chri$]

That should be fine - once the desired temperature is set the thermostat will keep the water at the correct tempurature. The only difference is a 200w could handle a much bigger tank if needed.

 

[Chri$]

If you decide to go for one try here www.aquatics-online.co.uk they are cheaper