Sump Design

[Speedbump67]

I am going to try posting this here since I received no replies in the DIY forum.
Starting to design a 90 gallon system. What do you think about the sump design?

http://i.imgur.com/tDzONDZ.jpg

[fishgate]

I like the design but you don't need a bubble trap between the skimmer and chaeto section. Put one right before the return section. I like the integrated ATO but you lose that space to your sump. If you are constricted on space, then ok.

[KStatefan]

I would resize the next picture you post. the image goes way off my screen.

[Speedbump67]

I thought it made it simpler to put the ATO in the sump instead of getting a small sump and a separate ato reservoir. Reduced image size 50%

http://i.imgur.com/QrfV6Qo.jpg

[Speedbump67]

Complete System. No details in this drawing of the stand.

http://i.imgur.com/7ME0P1W.jpg

[scelona]

That is the same sump design I use (other then built in reservoir) and am very happy with it, the chaeto catches most bubbles before they make it to the bubble trap and then the trap takes care of the rest. Be aware that a 4 gallon refugium is going to make a very small impact in nitrates/phosphates on a 90 gallon system. I would highly recommend that you put your ATO reservoir somewhere else and increase your fuge size. Just as an idea this is what I did for ATO.

http://i173.photobucket.com/albums/w61/Sean_Celona/IMG_3104_zpssis4xu2a.jpg (http://s173.photobucket.com/user/Sean_Celona/media/IMG_3104_zpssis4xu2a.jpg.html)

http://i173.photobucket.com/albums/w61/Sean_Celona/IMG_3103_zpseuivw24p.jpg (http://s173.photobucket.com/user/Sean_Celona/media/IMG_3103_zpseuivw24p.jpg.html)

[thegrun]

I prefer that the return pump section is sized large enough to handle all the drain down water, rather than setting it up so the extra water overfills the refugium. Overfilling the refugium will allow your macroalgae to float over into the return pump section and then clog your return pump when the pump is turned back on. Moving the bubble trap from after the skimmer section to after the refugium with an under/over under configuration would give you more drain down capacity in the return section, but you may need to shrink the skimmer and refugium sections to get full drain down capacity.

[Speedbump67]

I have not calculated the volume I would need in a drain down yet. The skimmer section is set by the footprint of the skimmer I am wanting to use. I just started to read the thread on the algae scrubber and I might try that instead of the chaeto which would let me increase the size of the return section.

I have seen a few sumps that had the bubble trap arranged under-over-under. Does that gain you anything besides the volume being included in the two sections? I had never really looked at it like that before but the volume in an over-under-over bubble trap is isolated.

http://i.imgur.com/1XaEN5P.jpg