Forum » HYDOR ETH 200 and minimum litres

I have a 70 litres marine aquarium and i want to use a Hydor eth 200 in-line heater.On the box of this heater i read 100 lt minimum.Will i have problems if i use this heater for my 70 litres aquarium?Thank you!

No problem with only 70 litres... Do not place the ETH heater in horizontal position... is the only suggestion.