Review on ๐งช Hardness Test Kit for Freshwater by Dawn Thompson
Most likely accurate, although the instructions are separate from the product.
Instructions must be printed on the bottle in clear text. Much of the information in the owner's manual is useless. If any information has had a chance of being useful, it is vague at best! 3 stars because it seems accurate and inexpensive. The tubes are also very fragile.
- Absolute legend
- There are errors
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