Kinda an abandoned thread here but I've added some more SPS and some more equipment since last update. All 12 of my initial 13 frags above are doing great in the main display. My little 20gal QT I don't think was stable enough for some of the SPS frags. Some were OK but others, not so much. They were starting to look worse, showing some receding tissue thickness, whiting at the base, etc. However after putting them in the DT, they bounced back pretty well. I'm seeing some bleaching/losing color at the moment but am just gonna ride it out. I'm chalking it up to still adjusting only being 2-3 weeks in their new DT environment.
I also had a bacterial bloom which I documented in
this thread. Latest update explains my UV sterilizer purchase and install. It was pretty gnarly:
[REMOVED QUOTES FOR FULL SIZED PHOTOS]
Well I hooked up the UV. Definitely makes a very noticeable difference rather quickly.
Approximately 1:30pm when I finished plumbing it in:
Roughly 3hr later at 4:30 running it at around 250gph:
To get this in I had to finally commit and build the accessory manifold off my return plumbing:
Put in a gate valve between the ball valve and the sterilizer so I can turn the feed on/off without effecting the flow rate with the ball valve. I figured placing it before the UV would reduce the water pressure in the unit thus being inherently less likely to leak (not that I thought it would). Also, I've not thought about it much, but it seems the less line you have restricted pressure in, the less total energy loss you'll have in the system. In theory this just makes things easier on the pump, i.e. run less amps per unit flow:
Of course the Pentair 40W UV Sterilizer on a quick little stand made of oak, the same material the final cabinetry will be made of. Just some rough tube plumbing directly into the tank as to not recycle the UV-filtered water back into the sump:
And a little FTS of the setup: