I joined because I had a 55g for 2 1/2 years that crashed a about a month ago due to my own ignorance. It had lots of problems and the advice I would get at the LFS from Day 1 was questionable, to say the least (and the guy there seems a little condescending as well). They were just out for a quick buck (one example was that Kick Ich was touted as the greatest thing to come along in years). I wanted to find a place to get advice from people who don't have an agenda, and found this site a few weeks ago. I lurked for maybe a week before I joined. I've been very happy with all that I have learned since I found this site. Everyone is very helpful, and it's easier to ask questions than what I had come to expect. I would guess that I've spent 50 hours or more this past month reading posts and doing searches for various topics. Big learning curve.
By the way, I will be upgrading from my 55 to a 75 tomorrow. I plan to do it right this time. Thanks to everyone who has contributed to this forum. Now I feel like I know what I'm doing, and I'll avoid some of the mistakes I made the first time around.
I saw Nemo, and it did inflluence me to the extent that my daughter is insisting on getting 2 clowns as the first fish we add to the new tank (after the levels are right, of course).
Pete