I am also questioning the final build of my DIY sump.
This is also going under a 125, and is also approximately 30 gal..
It is 32"x15"x15". I was questioning the placement of baffles and I did look through the "Discussion of the week" (
http://www.thereeftank.com/forums/sh...ad.php?t=46442).
I have settled into the idea that the sump for me is just for the increase of total volume for tank stablity, a place for the skimmer to be, and hopefully a place to get rid of particulates.
It seems to me the baffles are for two purposes:
a) Help get bubbles out of the flow.
b) Hopefully let some of the detritius settle out.
I guess the question for me winds up being Why would I need baffles if I do one or both of the following:
1) Add a filter bag on the input lines
2) Add a "sandwich" of filter mat between two pieces of egg crate, in a vertical positioning submeresed? ( NOT placed horizontal like a "wet-dry" )

This would be much easier than trying to fit acrylic baffles on my DIY sump, because if you look at the pic of my sump, the fronk, back and bottom are all one piece of acrylic! ( I squared it between a workbench and clamped piece of wood and carefully heated it with a heat gun. Then I just had to deal with essentially one long seam on both sides). To round a piece of acrylic ( or two) to fit the bottom perfectly could be a very large test of patience.
What problems, if any. would a "wall of
filter floss" create?
(Other than the expense of replacing that occasionally.)
