| 
				 Fluval 205 
 I have a fluval 105 and I found that the O-ring can sit in a position that looks like it fits but is the wrong position.  Instead of placing the O-ring on the top portion try placing it on the canister portion and seating the top.
 Also I've read that Vasaline is a petroleum based product and was advised not to use it.  I'm not saying the guy who recommended it is wrong.  I just don't know what to believe as far as vasaline goes.  I was personally going to lube all my o-rings with it but was talked out of it.
 |