Time to start doing instead of just talking. I'll be ordering my wild Discus soon and hopefully will have all the necessary aquascaping stuff for their tank this weekend. Time to decide on the pump and plumbing. I won't have any biomedia for the sump til 2 weeks from now (Bobby, we didn't make it for MNF this week, but the 15th is a go) but I at least want to plumb it and re-route the FX5 in the meantime.
I want to copy
Egon's sump overflow design. It's simple and clever. The only thing I worry about is that if I'm on a drip, I'll need that to be overflowing at one level, getting rid of the water I replace... but if the power goes out and the pump stops and the sump takes on the excess from up above... it'd overflow out the drip's overflow... and then the power could come back on and I'd be screwed, right?
I also worry about how I can make the sump's returns be totally silent (ie, submerged) without opening myself up to siphoning issues. Though I suspect that maybe I can figure out a way to middle it so they're below the water line but above the line where things would drain in the event of power outage.
So I need to solve those two issues, plus decide how I want to set up the overflow (ie, if herbie works with a 1/2" backup pipe - I assume yes) and what pump I want.
I feel like I should ditch the two sumps that I have and build a bigger one. There's a lot of space under here. Then again, they have to be able to fit through the little door. Maybe I can plumb them together and have them share one pump?
Downstairs, I am going to pull the baseboard off, cut an outlet-level hole, and hope that that can serve as my discreet point of entry for the drain tubes. I might be screwed re: a nice fat emergency drain, though, because down at that level the cement block gets thicker and I think the studs are only 2x2 instead of 2x4. At the very bottom I can buy myself a bit of space behind the baseboard, which is 3/4" + 5/8" away from the stud (math says... 11/16"!) if I manage to do the MDF wainscoting I want in that room. But even that could maybe not be enough. I may have to devise some other way.
I'm also thinking that perhaps a closed loop of some sort to provide a bit of lower-tank circulation (again inspired by Egon) might be a good idea. I do have those two holes in the bottom in odd places... might be nice to push waste right to them and set up one filter as mech-only, easy in/out for cleaning.
I guess there's still a lot more planning to be done... I wish I had more experience with stuff so I could be confident in my ideas and just go do them and tell you all, rather than asking a billion questions.