Hydor ETH External Heater 300W (16mm)

Price: £52.99 £47.6910% off
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This is the first and only inline heater available to hobbyists and the brilliant design means it keep your water temperature more stable than ANY OTHER TYPE of heater. The PTC heating elements guarantees maximum safety against over heating.

Suitable for all external filters (simply choose the heater which uses the same size tubing as yours). You can also use with sump tanks. For more details, watch the video below.

by alexander rose on 12/5/2013

Super easy to install, effortlessly heats my tank. Couldn't be happier.

by Andrew Kent on 28/1/2013

Excellent product so far, quickly heated my large 400l tank thats in a cool room (15 degrees C) in the garage up to 20 degrees C and seems to not have any trouble maintaining temperature. Delivery was faster than expected. Thanks

by James Pallot on 26/9/2012

Easy to install & does a great job

by Duncan Stewart on 1/3/2012

Awesome. got it working on a 350l tank at works really well.

by Michael Pritchard-barrett on 20/7/2011

This is a fantastic product. Apart from the obvious 'hidden' benefits it heats up my 240 litre tank in no time and keeps an absolutely constant temp which corresponds exactly with the dial on the heater.

Ask a question about this product
Hello, I am interested in purchasing one of these, but the inside diamter if the tubing from my filter is only 15mm. Should this be okay with this product? Thanks, Alex

It will be fine

would this heat fit the fluval fx5 filter ?


What size is the tubing?

i have an eheim ecco pro 300 filter. the tubing is 12/16. which heater should i buy, 12 or 16?



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