Wonder Shell

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  • Made of Natural Materials
  • Easy to Use 
  • Adds Essential Minerals to Aquarium Water

These shells are great for adding hardness and minerals into your aquarium water. If you need more minerals for snails, shrimp, plants, goldfish or African cichlids etc, Wonder Shells are a good place to start. They are extremely easy, just drop it in your aquarium. Over time, Wonder Shells will completely dissolve into your water. Simply replace them when they do. Please note that Wonder Shells do not raise the pH level of your aquarium. 

Customer Reviews

Based on 297 reviews
Tera K. (Los Angeles, CA, US)
Wonder Shell

I just started using this product and so far it works great! Loved receiving all of my products and they even came with a cute fish sticker! My other purchase was easy green fertilizer and my plants are looking so much happier! Thank you for the products!

Derek S. (Saint Paul, MN, US)
a must by!

I use these in all my tanks, co op seems to be the only place I can find the real big ones nowadays also. arived fast and well pacaged as always ty Cory

Thomas W.
Great product

Great product. Helps get water to favorable parameters for shrimp. Really good company to order from I always get my stuff fast and correct.

Jeffrey M. (The Dalles, OR, US)
Wonderous Shell

Works swimmingly! Keep it in the tank at all times!

Wade L. (Mira Loma, CA, US)
Wonder Shells are convenient and useful.

I have multiple community aquariums, all with various shrimp and snails. I have found Wonder Shells ensure my invertebrates are healthy and thriving as well as providing balanced TDS levels for my tanks.