I got a Gamma UV
40W (had a chinese-made jebo 36W that probably actually put out about 5W). I doubt your 9W TT would do much good in a 180. I think I read somewhere that 40W is appropriate for a 180G (which is why I went with a 40!)
The Gamma 40W is big - like over 3 feet long. And it has huge connects - something like 1 1/2". But it's working - ich has been pretty much wiped out (a single spot will show up once in awhile but not for long). The flow rate to kill parasites with it is around 900GPH - I'm only pushing around 700GPH with a Mag 7 (probably 600 with head loss), so it's much slower than it could be if I put a mag 9.5 on it - but I stole my 9.5 to overdrive my EV-180 which has worked out great. And it should definatley kill anything that goes through it.
The Gamma UV
definately adds some heat though. Have had to deal with that by moving my 2 ballasts out of the canopy and up on top, but its high enough (8' or so) you can barely see them.
I thought about using filter floss. I fixed most of the microbubble problem by only running a single return pump - cutting water flow in half, which I'm trying to make up for with powerheads (Koralia's) in the tank.
I'm trying to figure out how to do a closed loop at the tank, but the built-in cabinet is up against a wall, so I'd have to cut into the wall to do it.
Livestock update - my bubbletip, which I almost lost a year ago and virtually had no tentacles at one point, LOVES the new tank. It's in the top center, in the back of the tank, and has at least tripled in size. it's tips are getting bigger and rounder, it's getting greener, and it's eating better than ever (frozen squid and such). My curlicue and condy are also both doing really well.
'nother update, I think I lost my blue devil damsel. No idea what happened to him, he never showed signs of stress of illness - he just dissappeared one day. Checked the overflows of course, and couldn't find him.
My clown trigger is growing, and my niger trigger is too. Blue tang is also growing fast now, and is probably about 7" long now (was 2" when I got him).
GSP's never really did recover - they come out a little ways, but never reach the flowing, grassy-field look they used to.
look awesome - one reaches almost 5" across during the day.
Xenia's aren't so great, my curcliecue got too close to them, and wiped out a small patch.
Zoo's look good, but I'd like to see them start growing.
Nitrates are still stable from 0 - 10PPM. Hard to tell at the lower ranges with the AP test kit. W00t!
Sump socks still dirty and overflow within a day. I'm sick (sock?) of messing with them. Looking for bigger ones, I found 16" and 22" socks online somewhere. That might make a big difference.