Anybody using one of these ? I found a few youtube videos and it seems like alot of sponges and not much bio . How's the flow after 4 weeks ?
I don't use one but I was seriously considering buying the Thermo 100 for my 17g, as my Hydro 200w inline failing makes me nervous, it really depends on which model you were considering.
There are two columns on the biomaster, you can put more hel-x biomedia and less sponges in 2nd column before the output if you want to. The thermo series (with heater) is similar to traditional canister filters and doesn't have the removable prefilter sponge column.
This is definitely a premium filter, it is expensive but has features I don't see often in other canisters. It has a self priming feature and compartment to add water, you can add a heater, remove the prefilter sponge column for easy cleaning etc.
You can probably get more powerful filters for larger tanks especially at the $300 price tag for the Biomaster 600, I do wonder if you call around to stores if you can get these cheaper somewhere other than Amazon.
If you want more info I would check on the ukaps forum as mostly this is used in UK and by Europeans.
Also the North America versions do come with 120v so not a problem for filter or heater.
This filter is like the Breville of Aquarium filters, great engineering and useful features but you gotta pay a premium price.