ok...the overflow from the left chamber (Mantis layer) to the Fuge has a box around it...why? It seems like you could just skip that piece and let it straight overflow into the fuge, also helping to churn your macros. just a thought.
p.s. I have AUTOCAD student edition if you want...full box set, its from 1994, but I was born in '87 and im still fine, the program weighs a ton it 2 massive books.
Might have to check it out. Is it better than this I'm using? Also the spot I think your talking about is for a filter sponge block. Figured it would catch some of the larger pieces if there were any Just hafta clean it every other day or so to prevent nitrate build up.