Planted Tank Obsessed
Join Date: Feb 2007
Location: Vancouver, Canada
Just an anecdote of my experience.
Having the drains on the aquarium floor is a bad idea waiting to happen. You have so many connections and daisy chained a few pieces of equipment together that there may be a leak somewhere, at some point. With the pressure of the water on the drains and the fact that if there is a leak and it is not tended to over time, your entire aquarium will drain out.