It is normal to not have any copper registering on the test strips as the copper is being utilized within the system at a rapid pace. If the quantity of algae is low then the ionization level can be lowered to prolong the life of the probe. If algae levels begin to increase then the ionization level can be raised again. It is always good practice to routinely monitor the copper levels in the pond. This is especially true of small ponds that have lower volumes of water, as the copper levels can rise quickly if left unchecked.
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