- Test the pH and KH of the water.
- Aerate pond well e.g. fountain, waterfall or air pump. Conduct a partial water change (as much as is practical) before use, especially if the water is extremely green, like “pea soup”.
- Switch off pump only if strong flow rate could prevent particles from clumping but remember to switch back on as soon as water clarifies.
- Mix the correct dose in a clean bucket of pond water, then pour evenly around the pond.
- Clean the collected particles from the filter after treatment.
Without a filter, some clumps may float and can then be removed using a net. Use when you have plenty of time to observe the fish and take action in the unlikely event of a reaction.
- Do not use when the dissolved oxygen may be low (e.g. at daybreak, in hot, humid or thundery weather, or within three hours of feeding).
- Do not use if the KH is below 6 or the pH is below 7.
- Do not use if there is nitrite in the water.
Failure to conduct a partial water change on extremely green water, like “pea soup”, may result in a rapid reduction in oxygen which could be dangerous to fish! For more information on this subject visit our knowledge hub
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