Page 45 - Koi Net - On-Line Koi Magazine - Issue 92

they were knocked back by the Chlorine in the tap This is a photo of my
water, so his filters had no chance of getting established. sediment filter. It turns
orange after a week of
The small amount of Chlorine going into the pond was
being changed and this
killing all the good bacteria that had built up in his is drinking water!
filters. After changing his water purification his filters
matured.
Another customer going through the same new pond
THE PROBLEM syndrome, was doing water changes to lower the levels
of Nitrite in the pond. Every time he carried out a water
THESE DAYS change the level of Nitrite in the pond increased. He
IS CHLORINE gave me a call and went through the situation with me.
I asked him if he had checked the tap water for Nitrite
LEVELS ARE and the answer was no, so he hung up and went to
HIGH AND check his tap water for Nitrite. He called me back and
said, “I don’t believe this, the level of Nitrite out of the
HAVE BEEN tap is higher than in the pond.”

SINCE COVID Everyone has Chlorine in their tap water and some have
Chloramine. Chloramine is made up of Chlorine and
Ammonia. Ammonia is added to the Chlorine and this
bonds to the Chlorine to make Chloramine which lasts
longer in the water supply.
To deal with Chloramine and Chlorine we must use
water purifiers or some sort of dichlorination either
through liquids like Tap safe, Chlor-go or crystals, like There are 3 carbons available to deal with, Chlorine,
Sodium Thiosulphate to neutralise the Chlorine. Chloramine and Metals:
3-Stage purifiers holding cartridges have always been a ■ GAC Carbon, which stands for granulated activated
popular option with the ease of changing cartridges. A carbon and the best carbon to use is Coconut
Sediment filter goes in the 1st housing, a GAC filter THERE ARE carbon.
(Granulated Activated Carbon) in the 2nd housing and a 3 CARBONS ■ Catalytic Carbon, which is granulated activated
Carbon block in the 3rd housing. There are different carbon that has gone though another process to
cartridges available to combat Chlorine, Chloramine AVAILABLE TO make it Catalytic, this is used for Chloramine and
and Metals. Cartridges can be expensive and the filters DEAL WITH, Chlorine removal. Again, the best carbon to use is
are restricted by flow rates. The problem these days is Coconut carbon.
Chlorine levels are high and have been since Covid. CHLORINE,
■ Bone Char Carbon that is used for Chlorine and
The popular option these days are Big Blues. These are CHLORAMINE Metals removal.
resin vessels with a pre-filter housing to remove the
sediment and filled with large amounts of carbon which AND METALS Sometimes you must use a combination of carbons to
is better to deal with larger volumes of Chlorine and deal with what is in our water supply.
Chloramine in the supply water.
One other element we must consider and deal with in
The first cartridge that is used before any carbon is our water supply is, Heavy Metals. Aluminium, Copper,
used would be a sediment filter that is rated at 5-micron Lead, Iron and Zinc seem to be affecting more customers
to remove any fine particles in the water. these days.

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