I've been looking at your pictures, it looks like a similar setup to what I want to do. Do you ever have any problems that I can look forward to running into? I know you mentioned moisture in the stand, thanks. I'll be sure to take the tubes to below water level. I'm also hoping to run CO2
so I'll want to minimize gas exchange through the sump.
Is that a HOB
filter on the second sump? I'm looking to get some combination of filter media in the sump as opposed to an external filter but it's a similar set up.
I'm a little confused about the necessity of the tee. How do you ensure proper circulation of the refugium? It seems like that overflow would just take mostly the freshwater dropping in and skim it off the top as opposed to forcing the water to flow through the system. I was thinking about having the overflow enter solely into the refugium, and having 2 tubes at equal height (maybe halfway up the sides of the tank) parallel to the ground connecting the 2 sumps. This way the pump is drawing the water through the tubes instead of it trickling over the overflow. I would also rather do this because it would allow me to use a bit more water in my system as I could have both sumps filled to the same maximum height.
I would then use filter media in the first compartment of the second sump, followed by a bubble trap to ensure the water must go through the mechanical filtration, and then the return pump.
This all makes sense in my head but I've never used any type of sump before and I've never had a display tank over 29 gallons so any help and suggestions are appreciated. If it would be easier to put my ramblings into a picture let me know.