Ya, I am very happy with it so far. I am still shocked it is working as well as it is.. nothing you design in your head usually works out as well as you hope, but this is a rare instance where it has.
One thing I noticed was causing way more problems than helping on my old sump was all the live rock I had in the sump. When I replaced the sump I scrubbed all the rock and stuffed it into my 29G hospital tank and within 3 days I had a major cyano outbreak from putting the rocks in there, just like I was having in my old sump. I guess I would call it 'bad' live rock at this point and I think the best course of action is to take it out and soak it in FW for a week to kill everything, let it dry out, and then put back in my hospital tank to get reseeded. My hospital tank now looks more like a live rock bin at a LFS anyway because it is so stuffed with rock now.
I have been having a bacteria bloom for about the past week in my tank after scrubbing the rocks in my display (took them out and scrubbed off the algae). Thought that would subside within 2-3 days but it is day 5 now and still pretty milky looking, although corals look fine. My next big purchase will be new rock from marcorock. My live rock is at least 10 years old now, and even though I have scrubbed and cleaned it often, I still think it is about to it's expiration date as far as being good live rock. I can boil it, dry it, and reseed it and make it good again, and I will do that but I won't use it in my 75G tank once I get new rock. Having the same few big pieces of live rock for so long, there is only so many ways to can aquascape with it and I think I have done every combination possible now so I want some new 'puzzle pieces' to play with to be able to scape my tank differently.
My midas blenny got some nasty infection and I had to dose some meds for that, which I am sure didn't help the water clarity any since I turned off my carbon reactor. Not sure what it is, looks like someone put out cigarettes on the blenny, little black burn mark looking dots on it but it is getting better with the meds (Melafix/Pimafix mixture). So my main tank is still in a recovery mode, but it is getting better each day and the corals in the tank, even the few SPS corals, are looking good with good polyp extension which is more than I could say before I replaced my sump.
On a positive note, my SPS 'frags' are growing great on a frag rack in my 29G tank, actually had to move the rack down towards the bottom 1/3rd of the tank and out from under the LEDs because they were bleaching a little but not bad. My clowns are still laying eggs every 10-12 days as well, so I have one tank that seems to be flourishing right now.