Hey guys, first off I want to say that I love the blog and reading all the different posts.  I always find myself getting lost (in a good way) on this site, reading for hours. Ive been studying aquaponics for two years now. I live in the city of Philadelphia and build a small 200 gallon system on my roof. Its been running leak free for about a year. I love learning about aquaponics and each time…