Blagdon Gravity Midipond 10000 and 14000 pond filters are ideal for all sizes of ponds. They are especially good for Koi and Turtle ponds. But these Blagdon pond gravity filters do need some
maintenance done on them from time to time, the
UV lamps need to be replaced every 8000 hours or in most cases every 12 months. Even though you may see a light on the lamp will have lost its ability to kill the algae suspended in the water as it passes by the lamp.
The Carbon pads need to be replaced every 6 weeks as they loose their ability to help maintain a healthy pond filtration system, the wool pads will also become blocked and this will also be a negative
effect on the pond.