JBL KOI high range Manual De Usuario página 8

than 0.25 mg/l. Most important, garden fertiliser from the area surrounding
the pond must be prevented from entering the water. Pollen deposited in
the spring is a source of phosphate in garden ponds that should not be
underestimated.
Remedial action:
• Binding with JBL PhosEx Pond Filter or JBL PhosEx Pond Direct
• Careful feeding that meets the nutritional needs of the animals
• Preventing fertiliser from the surrounding area from entering the pond
Note:
When filling your koi pond with mains water, you should also bear in mind
that some water works add phosphates to the mains water in order to pre-
vent lime build-up and corrosion in the pipe system. This can already lead
to an initial contamination of approx. 2 mg/l PO4 in the pond.
Instructions:
1. Rinse two test jars several times with the water to be tested.
2. Use the enclosed syringe to fill each of the test jars with 5 ml of sample water.
3. Add the reagents to one of the two test jars as follows:
a) A large measuring spoon (narrow end of the enclosed double-ended
spoon) Reagent 1, close with the lid and shake until dissolved
b) 5 drops of Reagent 2, agitate and allow to settle for 5 minutes.
4. Place both test jars into the comparator block: the jar with added reagent
into the smooth end of the comparator block, the jar with the untreated
test water (blank sample) into the notched end of the comparator block.
5. Move the comparator block together with the jars from side to side over
the colour chart, with the notched side of the block facing the scale, until
the colour of the sample with added reagent matches the colour under
the blank sample as well as possible.
6. Read the phosphate content in the notch of the comparator block.
The graduation of colours from green to red provided additionally on the
colour chart enables quick analysis of the measured value.
UK