lilylover - I have a Fishmate pressurized UV + Bio filter with an automatic cleaning system called Powerclenz.
muddy boots - I put a new 9w UV bulb in in May, so it should have helped keep the water clear this summer - but it didn't :(.
I have another problem now - too many fry, my fish have been very prolific this year ::). I've given away more than twenty small fish, but there are probably at least another twenty too many. I'm going to try the local Freecycle to see if I can find homes for them but with the water being so murky it's very difficult to net the small stuff.
Tricia