Brewboy, the Tunze reactor is quite compact, and as long as the submerged area of your Ecosystems was deep enough, I see no problem fitting it in there. As a matter of fact, the macros could utilize any excess C02 escaping the reactor... Roger mentions needing an 8" water level, and I am sure the Ecosystems sump would accomodate this...?
Roger I am impressed with the specs on this media... I have been concerened with running the more traditonal medias and trace element release in conjection with the Ecosystems MM releasing trace elements as wellââ"šÂ¬Ã¢â‚¬Ârecipe for overdose sometimes I think (not to mention regular water changes)... The Tunze media sounds like a good way to alleviate much of that concern...
With a fairly calcium hungry 100 gallon tank, how often (roughly of course) is one looking at filling up the media in the 3174/3...?