OK, I have to throw in my $.02 too.
I think Sparks is doing a jam up job. Keep it up!!! I think many people get hung up on larger tanks, but larger is alot more money. The difference in the cost of water and electricity alone is huge. I really love the overflow that Sparks built. It is a unique tank and one to be very proud of. Not to mention, I am using it as inspiration to possibly create a nano setup. I think some of the prettiest tanks are the small nanos.
Not to mention no matter if you have a small or large tank, you get out what you put into it. I think Spark's tank speaks volume. (Pune intended)
Keep us posted.
Cheers,
Chris