I have inherited a huge Koi pond with my new house and now part of the complicated filter system in place is strangely broke?
There is a uv 55w clarifier which the water travels through at the back of the pond and the light inside doesn't seem to connect at any end. You can push the lamp through with your finger there doesn't seem to be any ends although i am sure there was before?
Would anyone be able to tell me how to identify the make as i cannot see any logo or maybe where i could look to find some replacement parts? The pond is getting greener and the filter bits at the back, glogged with algae.

Any advice would be very appreciated!