The AAP Wonder Shell (previously by Weco) was a aquarium maintenance professional's secret for years.
AAP has now really proven this product to many, but this has brought forth copycats selling non-authorized and often clearance product & information.
Often these products are not nearly as fresh, resulting in the major benefit of Mineral Cations being lower and thus less effective
Beware of Amazon, Aquarium Co-op, Pet Mountain and others selling this product and ONLY shop via "American Aquarium Products" or via platforms authorized to sell fesh AAP Wonder Shells (such as only ONE eBay seller, as the rest are NOT authorized)
Genuine Aquarium Wonder Shell Aquarium Mineral Blocks
- from AAP | Disease Preventative
FRESHEST PRODUCT (Not Clearance Product) For Cations, Electrolytes
Patent Pending Medicated Version By "American Aquarium Products".
Exclusive Aquarium and Pond Water Conditioner