Cannister filters for a 150g FO?

[Edward Smith]

Everything I've read for a FO suggests: Skimmer, DSB, liverock
Like a traditional reef.

But I see the professional maintence companies use these:
http://www.eheim.com/en_GB/products/technology/external-filters/professionel3e-700

Do these work?
If a tank is heavily stocked, couldn't I just use a couple of these?

Thanks

 

[mbingha]

Sure, if you want a detritus trap so you have have high nitrates/phosphates. Also deep sand beds are no longer recommended.