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Message: <blockquote data-quote="Bruce60" data-source="post: 9622973" data-attributes="member: 110680">The first thing I would like to know is the volume of your display. This will help guide whether or not the total volume of the sump is sufficient for the system. This means that when the power or main pump fails that the sump can contain the volume of water from the display tank that will end up in the sump (typically down to the bottom of the overflow in the display). You also have to size the return pump to prevent the return chamber from running dry, which is a function of the chamber size and flow through the sump.My primary concern about building your own sump with this design is how the chamber walls are going to be supported against the flow forces that will be applied across them. This is especially true since you have some dividers that will be partially supported by other divider walls and not the walls of the sump itself. I especially see the point where the four chambers meet as a potential failure point. Materials will also play a role. Bonding glass and plastic pieces is not as strong as bonding the same materials.The other thought is the number and order of the chambers. In the current configuration I am concerned there are no nutrients left for the refugium or media chamber. Not sure you will need all these chambers in the end. Not sure if you have flexibility in where water comes in and out but here are a couple of alternatives.One, from the Drain chamber split the flow into either the ATS or skimmer/fuge and then both flow into the return. It takes some reconfiguration but give you the ability to control relative flow between the two. [ATTACH=full]2441079[/ATTACH]Two, split the drain from the display to feed the fuge separately at a lower flow from the skimmer/ATS, the back to a common return.[ATTACH=full]2441077[/ATTACH]</blockquote>

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