I am a chef and I find that fish keeping is very much like creating a recipe. A true chef will come up with their own recipes and usually make them up as they go along.
Same thing with fish keeping.
The only issues I have had with tanks is when pieces of equipment crap out. I had a real *****ing 180g sw that was really beginning to develope nice and had an issue with the pump in the sump. Came back 4 days later to find a not so nice milky colored tank of death.
Other times have had fish who decided to smash heaters, destroy filter tubes etc...
So far as the hippies who are hassling you tell them to pretend they have a tuba and blow. Or ask them if they are your lawyer, when they say no. Tell them to get off your case.
I will look through my photobucket to see if I can find the pics of a 180g that I did this way.