Building new sump need suggestions

[Proteus]

For my baffles on sump do you prefer

Over under over... This will give better surfactant removal from middle chamber to be cycles through system again

Under over under.... This gives more area for micro bubble elimination

[lockrookie]

I usually do the over under over most sumps are built this way so that you get the hieght you want/ need for each chamber. And doesn't effect micro bubbles at least it hasn't in my cases. Mind you I sometimes skip the last over until the last chamber In the sump I have pics of sumps I've built if you wish to see

[Proteus]

My thought too as under over under may create build up of bacterial film in middle chamber.

You can post some puts if you like aways nice to get others ideas

[twisty]

I wouldn't mind seeing pics as i'm in the process of building my sump as well

I have pics of sumps I've built if you wish to see

[lockrookie]

Daycare tank sump

http://i998.photobucket.com/albums/af103/lockrookie/DSCN1246.jpg (http://s998.photobucket.com/user/lockrookie/media/DSCN1246.jpg.html)

Sump for my 180g

http://i998.photobucket.com/albums/af103/lockrookie/180g%20tank/101_6564.jpg (http://s998.photobucket.com/user/lockrookie/media/180g%20tank/101_6564.jpg.html)

http://i998.photobucket.com/albums/af103/lockrookie/180g%20tank/101_6574.jpg (http://s998.photobucket.com/user/lockrookie/media/180g%20tank/101_6574.jpg.html)

http://i998.photobucket.com/albums/af103/lockrookie/180g%20tank/101_6582.jpg (http://s998.photobucket.com/user/lockrookie/media/180g%20tank/101_6582.jpg.html)

Sump i built for a lfs' customer

http://i998.photobucket.com/albums/af103/lockrookie/null_zpsf05fd1e8.jpg (http://s998.photobucket.com/user/lockrookie/media/null_zpsf05fd1e8.jpg.html)

Sump I built for a friend

http://i998.photobucket.com/albums/af103/lockrookie/misc%20projects/DA36438F-E0BC-4C90-AFEF-12DC06A452AE.jpg (http://s998.photobucket.com/user/lockrookie/media/misc%20projects/DA36438F-E0BC-4C90-AFEF-12DC06A452AE.jpg.html)

http://i998.photobucket.com/albums/af103/lockrookie/misc%20projects/550CBD2D-08D7-480A-846A-BE75751F6C68.jpg (http://s998.photobucket.com/user/lockrookie/media/misc%20projects/550CBD2D-08D7-480A-846A-BE75751F6C68.jpg.html)

http://i998.photobucket.com/albums/af103/lockrookie/misc%20projects/1D1905B5-9875-46FF-B9D5-2967791FF18B.jpg (http://s998.photobucket.com/user/lockrookie/media/misc%20projects/1D1905B5-9875-46FF-B9D5-2967791FF18B.jpg.html)

I've built some others but I cannot seem to find the pics sorry I hope this helps or gives you ideas

Basically make your sump work for you and all will be good

[twisty]

What's the isolated compartment in the corners for?
ATO?

[indreamx]

How big is this sump?

[Duckhams]

I think it depends more on the size of the sump, flow through it and which compartments sit where in it. For example, if there is a refugium in the sump, that will dictate your baffle orientation and so on, like lockrookie said.

[Myka]

I prefer under, over, under. Although I usually do 4 baffles so it's under, over, under, over. :D With the first baffle "under" then you suck up less microbubbles, and with the last baffle "over" any bubbles that are present are already at the surface rather than down by the pump inlet.

[Bblinks]

I have always done under and over for my sump. Really like the simply 2 chamber design that has worked for me on multiple tanks.

I am not a big believer in complex sumps due to the main factor of size and function. Refugium does work but it really needs to be appropriately sized. 1/2 of your tank size would make it worth while.

Also, I usually leave about an inch and a half in between the dividers to accommodate the flow I like to achieve for my turn over rate. Some believe that the flow through your sumo should match your skimmer intake rate but that has never made sense to me as my point of view is the more time the water passes through the sump, the more chances your mechanical filter and skimmer gets to pull the gunk out.

This leads me to 2 chambers in the sump design, one is for mechanical and skimmer filtration and the second is for the return pump. I know this works and works well but of course there are a million way in this hobby to achieve what you want in your tank. There isn't really right or wrong but just what works for you.