I am looking to purchase an Eheim but haven't used one in years so am unsure as to which one to buy.

I have a 6x2x2 with a sump filter that does about 3500 ltrs an hour. However I still get unwanted debris floating around the bottom half of the tank. With a sump, unless the debris goes over the side of the wier it doesn't get filtered out.

I have been looking at the eh2227 wet/dry.. I used to have an old eheim wet/dry and it worked great for a long time.

I would be greatful if anyone has an opinion on what Eheim they believe will best suit me as a assistant to my sump filter