Here's the stand the whole thing is going on, again Hagen original from 1992. It's solid plywood, some of the tape is lifting off the edges and my brother in law (who's a cabinet maker) replaced the top tie 3/4" plywood and it's a bit ugly but still really solid.
I'm plumbing everything down to my 6' basement where I placed my sump. Again remember I've never done this, have never seen this done and only have a ton of reading under my belt. I'm fairly handy (I'm a renovation contractor) but I was really nervous about all this. Thankfully the wife was back in Alberta visiting friends so drilling holes in the walls and fishing spa flex through the floors and walls was a bit less nerve racking
Here's the 1 1/2" safety line being run through the cabinet. I'm running a full siphon herbie into a 80 gal sump.
and here's the main drain. I started out with a 3/4" line but it proved too small for my pump. I am using a Laguna 2900 pond pump and figured I was pushing around 1000 gph after the 12' of head but the 3/4" siphon was probably a couple hundred gph short of that. I was already drill for 3/4" bulkhead and it was a bit late to change now so I just transitioned as quickly as I could to 1 1/4" on both sides of the bulk head and it works like a charm. The only disadvantage I can tell is it is does creat a bit of turbulence in the line and sometimes you can hear the water rushing through the bulk head, but the house has to be dead quiet to hear it.
