did you put that sponge they give you in it, if so it could be culprit, i had to remove it in mind and it worked fine...not that i use it at all anymore, but thats another story
bioreef from florida builds a lot of custom dquipment, and are building my canopy for 175 dollars out of oak.
shipping would be 97 dollars to michigan, but my parents live down there and are bringing it up to me.
www.bioreef.com
/john