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Copyright HRB 3662
87
Should the winter months have been exceptionally warm, the algae growth begins again and the
overwintering product is partially consumed. It has also been our experience that, if a swimming pool is not
covered during the winter, up to half of its water content is replaced by snow and rain. This means, that in
such special cases, it may be necessary to add additional overwintering product following visual inspection
of the swimming pool water.
What to do if…
Problem
Cause
Remedy
1. Water is green but
clear. Often brown flecks
in water which contains
copper or iron.
Traces of iron from the fill-up
water (yellow-green
colouration
Intermittent chlorination with rapid chlorine
granulate or rapid chlorine tablets, regulate pH
value, add flocculant and fresh water, run
circulating pump continually.
Traces of copper, from copper
pipes (turquoise colour)
2. Water is brown and
murky
Iron content in fill-up water
As in 1.
3. Water is black and
murky
Manganese content in fill-up
water
As in 1.
4. Water is milky and
murky
Murkiness caused by
c) colloidal, organic
impurities
Intermittent chlorination (as in 1), add
flocculant, run circulating pump.
d) Hardness minerals
(inorganic)
Regulate pH value, add flocculant, run
circulating pump.
5. Pool walls are slippery
Algae growth
Intermittent chlorination as in 1.
Add algaecide.
6. Pool walls are rough
Build up of hardness minerals
in hard water (limescale)
Remove deposits: Empty pool, use basic
cleaner, maintain pH value of 7.0-7.4.
7. Chorine odour, eye
irritation
Bonded chlorine present in
water (chloramine)
Intermittent chlorination as in 1, add more
fresh water.
8. Heavily foaming water
with reverse current units
Heavily foaming algaecide or
residue of overwintering/
cleaning agent is in water
Add more fresh water, do not use householder
cleaner.
9. Corrosion
pH value too low
Raise pH value to 7.0-7.4
- The filter system is to be operated regularly. As a benchmark, we recommend:
Intervals during service life: Daily 8-12 hours.
The filter system is to be used and cleaned in accordance with these operating instructions.
