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TROUBLE SHOOTING
Some Common Questions:
How can I tell if the unit is working?
The end caps will glow when the unit is operating correctly. In strong sunlight
this may not be apparent, but at night and at low light levels the glow is easily
detectable.
How long after I install the unit will my pond become clear?
There are many factors which control this, including the levels of nutrients
available to the algae, the water temperature and the level of sunlight.
Assuming that the correct size unit has been properly installed most ponds
should clear within 3-14 days. However, please allow a full six week period for
the unit to take effect.
The lamp is not working. What is wrong?
First check the power supply and the fuse. Check that the white electrical end
caps are correctly located on the lamp pins. If it still doesn't work, remove the
lamp (as detailed on the previous page). Check that the lamp and the quartz
sleeve are not broken. Remember to switch off the electricity and water
supplies before carrying out any maintenance on the unit.
The unit worked well when I first installed it but recently my pond
has gradually gone green again – what is wrong?
This usually indicates that the quartz sleeve has become dirty and requires
cleaning (read maintenance instructions). Also make sure you have the right
model for your pond size by checking the table in this leaflet.
Does a Pro Clear Ultima unit put anything into the water, and will it
harm anything living in the pond like frogs, newts, plants or fish?
Ultraviolet lamps leave no residues, and only affect the water pumped through
the unit. Unlike many chemical treatments, your Pro Clear Ultima unit will not
harm the plants and animals living in the water.
How long can I leave the unit running?
Pro Clear Ultima units should be run 24 hours a day, every day, from mid
March to early October, depending on the weather conditions. If the unit is
frost protected it may be left running throughout the winter. Otherwise, the
unit should be removed, drained and stored safely for the winter.
Can I use my Pro Clear Ultima unit if I am using any treatments for
my fish?
From our own experience of using a wide range of treatments and
medications, we have found no harmful effect from running Pro Clear Ultima
units at the same time as treating a pond, although some medications may be
broken down a little quicker than normal. Always check the manufacturer's
instructions before using any water treatment.
Can I bury the unit underground?
Do not bury the unit. It could become waterlogged at a later date, which
would be dangerous.
General Note: Large fish such as Koi can cause murky water
by stirring up the bottom of the pond. This murky water
should not be confused with suspended algae.
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