I know what you mean about the heat. My 10s I just have a jug that I use to top of the water and with this heat it seems like I'm always behind. I also when camping and tubing it was a BLAST! The only thing that sucks is taking classes now it makes the summer go soooooooooo fast. I'll have to check out the 75g.
Hey I don't mind your posting. I think its cool the different ways people set up tanks like your saying adding plants above that suck up the ammonia its very interesting.