Wonder Shell

Size

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.

Customer Reviews

Based on 35 reviews
89%
(31)
9%
(3)
3%
(1)
0%
(0)
0%
(0)
c
c.l.
2/5(large) Wondershell

They do make a differance in my aquarium. I use them to aid in keeping the water hardness more stable,also clears up the water i use 2 of these each month in a 75 gallon tank. I highly reccomend these shells been using them for years

C
C.G.
Growing fry

Great product for insuring your fish have the nutrients for good skeletal growth. I will be ordering this product again.

A
A.V.
Good

Pretty good! I haven’t noticed a huge difference in my snails or shrimps but where I rubbed the glass had no more brown algae.

T
T.D.
No more dead guppies

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!!!

W
W.M.
Wonder shell

Much easier and cheaper than messing with crushed coral.

Shipping Rates
Flat rate shipping on order under $70 of $4.99
FREE Shipping over $70.

To view our shipping map and estimated delivery times click here.

Live Arrival Guarantee
We guarantee our live products will arrive alive. We ask that you do your part and minimize the amount of time our packages sit out in the elements. It can also be a good idea to avoid ordering live items during extreme temperatures. This would be when night time temps are below 35 and over 80 degrees during the day. Now these temps are not for sure death, it's just what makes it easiest for all of us during shipping.

When temperatures are cold we will use heat packs and extreme cold styrofoam liners. Shipping live goods is difficult as our warehouse could be 70 degrees and your home could be snowing, and all the stops in between. We do our best and will make it right for you and may request to try again at a different time.  During heat waves, it's best to avoid ordering live goods as ice packs etc don't do enough to mitigate it. 

30 Day Return Policy
Our goal is to provide a fair way to satisfy our customers and not lose money while doing it. We make every effort to fully disclose how our products work and what is to be expected. A damaged product during shipping is an automatic replacement from us. When it comes to a difference of opinion such as: "My fish doesn’t like this food." That we don’t refund for. However, if you decide the light you bought is a bit too green for your liking, provided it is in the original box, within 30 days and purchased from us, we will refund it at your cost of shipping.

If you would like to return a product, start the process by emailing us at shipping@aquariumcoop.com This allows us to see if there is something we can do before returning the product such as a feature you didn’t know about or send you a return label. We don’t require an RMA number, but do ask you to contact us to initiate the return. Please do not call the retail store as they operate separately from the warehouse and will not be able to issue you a return label etc.

To read our full return policy click here

 

Customer Reviews

Based on 35 reviews
89%
(31)
9%
(3)
3%
(1)
0%
(0)
0%
(0)
c
c.l.
2/5(large) Wondershell

They do make a differance in my aquarium. I use them to aid in keeping the water hardness more stable,also clears up the water i use 2 of these each month in a 75 gallon tank. I highly reccomend these shells been using them for years

C
C.G.
Growing fry

Great product for insuring your fish have the nutrients for good skeletal growth. I will be ordering this product again.

A
A.V.
Good

Pretty good! I haven’t noticed a huge difference in my snails or shrimps but where I rubbed the glass had no more brown algae.

T
T.D.
No more dead guppies

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!!!

W
W.M.
Wonder shell

Much easier and cheaper than messing with crushed coral.

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