Finally I have some evidence that the UV Filter is working:

You can see the fish.

Click here to see the pre-UV filter pictures posted last month.

I’m considering a second UV Filter for perfect clarity.

Spring 2008 fish report:

• The pink 2 inch algae eaters have reappeared.
• There are still no mosquito fish. They must have died in the winter.
• Lillian bought me a new Plecostomus and it has vanished to the depths
• The Koi had some babies but they are not pretty colors
• The biggest Koi are now over 12″ long