Well, rear pond still isnt clear. Just for the heck of it, I purchased
an identical UV(half as many watts though @ 9 watts) for my front pond.
Just hooked it right up and didnt worry about the "proper
flow-through". Well, needless to say the front pond cleared up
completely in less than 48 hours. This wasnt even ran a simultaneous 48
hours. I had cut it off to clean the quilt batting and forgot to cut it
back on when I left for work. So....I have since put the smaller unit
on my back pond to see if itll do anything. Maybe this will let me know
if I have a bad bulb in the larger unit. We'll see....

Shhot. The 9 watt UV did a little good in the back, still hasnt
completely cleared though. Been hooked up since Saturday evening.

Think im going to need a more powerful unit. The 18 Watter is for sale
with two bulbs.