What
has happened?
Microscopically small algae, also called "Killer algae", (correct = algae
bloom) reproduce in rising temperatures (above 15°C) explosively and
colour the water green.
What
can happen?
Underwater plants die due to lack of light. Fish suffocate due to lack of
oxygen (Although algae produce superfluous amounts of oxygen during the
day, they use this up during the night).
What
has to be done?
1. The carbonic hardness must be tested (included in the OASE aqua
activ "Test Set").
Is this below 5° dKH, lime must be added to the water with the "Hardness
Plus" from the OASE pond treatment range aqua activ.
2. Test the pH-value. If the pH-value lies above 8.6 or below 7.5 also add
"Hardness Plus".
3. Only after step 1 and 2 have been completed add
Crystal Clear
Instant Clarifier according to the instructions. The pond will recover in
the space of 6 hours. Unpleasant odours will disappear. Plants can breathe
again.
Will
the pond stay clear?
Only if something gets done about the cause of the algae bloom. For
example fish might need less food, dead leaves in Spring and Autumn should
be removed, silt can be fought with micro-organisms (OASE aqua activ
Sludge Minus), real underwater plants as well as floating plants should be
planted in the pond.
Tip:
If you want to check the effect of Crystal Clear, simply take a jar full
of green pond water, add 1 to 2 drops of Instant Clarifier and watch the
water become clear after just 1 minute. Of course, this only works if the
water contains enough carbonic hardness (OASE
aqua activ Hardness Plus).
Solution:
OASE aqua activ
"Crystal Clear" instant clarifier
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