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These shells are great for adding hardness into your water and work as dechlorinator as well! Often times we need more minerals for our snails, shrimp, plants, goldfish and african cichlids tanks. What size you need depends on your aquarium. We recommend testing your water and adjusting based on water change schedule.
Here are some very loose guidelines:
3 Pak - 1 shell per month for 5 to 10 gallon aquariums.
2/5 Ounce - 1 shell per month for 20-30 gallon aquariums.
1 1/3 Ounce - 1 shell per month for 40 to 55 gallon aquariums.
2 1/4 Ounce - 1 shell per month for 75 and larger aquariums.
Wonder Shell
$1.99
Guaranteed SAFE Checkout
These shells are great for adding hardness into your water and work as dechlorinator as well! Often times we need more minerals for our snails, shrimp, plants, goldfish and african cichlids tanks. What size you need depends on your aquarium. We recommend testing your water and adjusting based on water change schedule.
Here are some very loose guidelines:
3 Pak - 1 shell per month for 5 to 10 gallon aquariums.
2/5 Ounce - 1 shell per month for 20-30 gallon aquariums.
1 1/3 Ounce - 1 shell per month for 40 to 55 gallon aquariums.
2 1/4 Ounce - 1 shell per month for 75 and larger aquariums.
T
No more dead guppies ![User picture]()
I had been going nuts. Having kept some of my angels 8+ years I couldn't keep a live bearer going to save my life. Thought I had tried it all till I came across these magic shells. Either they fixed my issues or someone lifted the curse off me!
Now I have to figure out what to do with all these guppy fry!!!
K
Easy Peasy
Just drop and go!
M
Love it
It really is a wonder..love will get more here soon.
J
Cheap!
I compared the Co-Ops prices to amazon and local stores. Co-Op had them all beat! Shipping was quick as well. Thanks!
S
Wonder Shell
This Shell gives me piece of mind. My pH is 6.2 out of the faucet .We have well water !I still add Seachem Equilibrium and Seachem Alkaline Buffer to my water but I've noticed a change in my fish and plants after adding the shell I believe it's the osmosis regulating in my fish due to this shell I recommend this product it really is a Wonder Shell Oh and the shipping is super fast!!! I love Aquarium Co op
J
Sense of Security
We have relatively hard water but it gives us a little reassurance to have these in our neo shrimp tank to make sure that they are getting what they need.
E
wonderful wonder shells
I got some for my mystery snails and they continue to multiply. Hoping these are part of the trick to help keep them healthy and strong shells.
D
Really Wonderful
I have live-bearing fish which like harder water parameters. The Wonder Shells help elevate my water GH. Great product. 👍
T
WONDER SHELLS
PRODUCT ARRIVED QUICKLY AND APPEARS TO BE DOING IT'S JOB.
M
Best way to add calcium to your tank.
I use these in all my tanks to increase calcium levels. I already have relatively hard water so it takes a long time for it to dissolve but it might dissolve faster in your water. That just means you needed it more though!
