Ren&Stumpy
Fishaholic
Ok may sound stupid but my tank is about 1months cycled and still contains the internal filter (rio 400) but it also runs a Fluval 405. I want to replace the internal with a larger Canister that also contains the Heater which really leaves me with only a Eheim Thermo. Looking a the large 2180 just wondering who has one and how do you find it reliability etc (its alot of money) and obvioulsy i want to cycle the filter but am not sure if its advisable to do this yet as my tank is relatively "young". I cant see it being a problem but how long should i run the new external on the tank before removing the old internal?
				
			
	            
 
/www.1st4aquatics.com/eheim-2180-pro...only-3182-p.asp

 Even Eheim have admitted the issue to a few members on here, when they spoke to Eheim about problems. Get the non-therom version of the filter, and a Hydor in-line, more reliable, and you don't have the heater in the tank