Brilliant for boosting / buffering carbonate hardness and stabilising PH. Because rainwater is very soft, ie has no hardness, KH can be displaced over time and make the pondwater soft / acidic. This caused several heartbreaking mid-winter wipeouts for me until I understood this. Now I always have at least a kilo of this product handy and add when my KH is 6 degrees of hardness or less. No more wipeouts!
Verified purchase: Yes | Condition: New
Good service and product
Verified purchase: Yes | Condition: New
Very good
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Helps to reduce ammonia in outside ponds and aids in oh levels.
Verified purchase: Yes | Condition: New
Great product; vastly improved KH and PH with one dose!
Verified purchase: Yes | Condition: New
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