Since there are sumpy people watching this thread...is there a 'somewhat concise' theory for freshwater sump design?
Obviously everyone's situation is different, but maybe a list of 'necessities for FW sump design' should be documented. Perhaps I am overcomplicating things...but most of my searching hasn't come up with a consensus on design. Tom's post earlier in the thread is probably the closest I've seen.
The only things I can really think of from putting my sump together and running it for the last year, well, 2 sumps, but we don't need to talk about how I broke the firat one while moving:
1. Build it out of acrylic! All those glass dividers get heavy quick!
2. If the downpipe enters from the top, make sure there is a section of static water height. Terminate the drain just under the surface. If it goes too deep it is too much back pressure for a siphon to form, and if it is not beneath the water line at all states of operation, you will get gurgling noise.
3. I hate foam blocks. The next sump I run will either have filter socks or just a prefilter over the return pump feeding through an inline polisher like a nu clear or similar.
4. Don't hard plumb the return line through the lid. This seems like a good idea at first since you want to seal the sump. I thought I would just seal the whole thing and feed the return plumbing through a bulkhead. Big mistake! That is the biggest source of vibration and an easily avoided noise source.
Thats all I can think of right now. I have notes somewhere, but hopefully someone with more experience will chime in.