Well said, Mark. I always try to overkill by getting extra but I am putting a 200w inline on a 29 gallon tank with a Ecco 2234. From what you are saying it should be WAY plenty. -----Original Message----- From: gsas-member-bounces@thekrib.com [mailto:gsas-member-bounces@thekrib.com] On Behalf Of Mark Dorward Sent: Tuesday, March 11, 2008 10:16 AM To: Greater Seattle Aquarium Society member chat Subject: Re: [GSAS-Member] InLine Heaters and Eheim Tube sizes Shango, The Eheim you got, 200 watter is it.. which for that capacity filter shouldn't be a problem.(2234). If your stepping up to a large tank, (can't remember the ratings) then the larger filters with the 5/8 hosing and the 300 watter is going to work for that.. fo/gsas-member _______________________________________________ GSAS-Member mailing list GSAS-Member@thekrib.com http://lists.thekrib.com/mailman/listinfo/gsas-member