SunGrow Shrimp Mineral Rocks for Molting, Aquarium Calcium Supplement, 1.8-oz

By SunGrow
Rated 4.4 out of 5 stars
$5.95Chewy Price
$7.99Chewy Price
In Stock
FREE 1-3 day delivery on first-time orders over $35

About This Item


  • Packed with minerals and calcium, which help molting.
  • Perfect for soft water that may be lacking in minerals.
  • The rough-cut design will give your tank a natural and rustic look.
  • Every pack comes with mineral rocks (approximately 0.5-inches) surrounded by mineral powder.
  • One 50g pack is enough for a 14-gallon tank and can last up to 3 months.

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Frequently Bought Together

Aqueon Shrimp Essentials Shrimp & Crayfish Freshwater Aquarium Trace Minerals, 4-oz bottle
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Dennerle Shrimp King Snow Pops Shrimp Food, 1.4-oz bag
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Total Price: $21.30

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Fish TypeMarine InvertebrateBetta
Aquarium TypeSaltwater, FreshwaterSaltwater, FreshwaterSaltwater, Freshwater

Questions & Answers

12 Customer Questions

I have a 20 gallon with a Betta, 2 snails and 5 Cory's. Is this safe for a tropical community aquarium?
Answer by ChewyOct 15, 2019
SunGrow Natural Aquarium Mineral Rocks maintain the health and vibrancy of your aquarium and underwater buddies and is ideal for soft water.

If building a vivarium can I use this in the water part that my lizard will be drinking from?
Answer by ChewyOct 04, 2019
These mineral rocks are intended for crustaceans and shelled aquatic animals, and they may expose reptiles to too much magnesium.

Can these be used to raise the pH of my freshwater tank?
Answer by ChewyNov 29, 2020
The mineral rocks have calcium and magnesium, these can be used to increase pH in freshwater tanks.

safe for saltwater tanks?
Answer by ChewyNov 19, 2019
These mineral rocks are safe for use in both freshwater and saltwater aquariums.

ReviewsWrite a Review

Rated 4.4 out of 5 stars
10 Ratings
Would recommend to a friend

10 Customer Reviews

Rated 3 out of 5 stars
By Ashley on Nov 11, 2023

More Natural Alternative to Wonder Shells

These are actual stones that don't dissolve like Wonder Shells but they do a similar job. I suspect they are something like sandstone since they have a powdery substance before you soak them per the instructions. Obviously they look more natural than Wonder Shells but I don't think they're as effective if you compare effectiveness per weight. I had more success with using these in my larger livebearer 20 gallon tank than my 5 gallon shrimp tank and I'm assuming it has to do with the problem I mentioned before. I'm not going to repurchase but instead try using seiryu stones to raise pH, which are cheaper per weight while doing the same thing.

Rated 5 out of 5 stars
By Tom on Nov 14, 2023

Color Boost for Red Cherry shrimp

When I put the rocks in my tank, my shrimp got livelier in just a few minutes. The rocks also made the water clearer, getting rid of the yellowish tint from the tank's driftwood. After 12 hours, my all-red cherry shrimp, especially the males, turned a much brighter red. Before, they looked kind of pink and brown, but now they're a vibrant red. I'm really happy with how well this product worked.

Rated 2 out of 5 stars
By Julie on Apr 2, 2022

Maybe they do something

They are pretty and maybe they add something to the water but my shrimp aren't really using them at all so I feel kinda a waste of money.

Rated 5 out of 5 stars
By Luna on Oct 10, 2021

Works okay

I only have 3 fresh water snails, so I didn’t expect much, but they look very pretty in my tank, and they’re definitely good for the PH in my tank ( higher for me personally ) so works out !!

Rated 4 out of 5 stars
By Jono on Sep 13, 2021


Since putting these in the tank I do see many going to the different rock surfaces - not congregating in mass or anything but they do seem to like these rocks. I'm going to buy some more.

Rated 5 out of 5 stars
By Kay90 on May 23, 2021

my shrimp can now shed

My shrimp are happier with this product now they can shed.

Rated 5 out of 5 stars
By Carl on Nov 6, 2020

Amazing, would recommend for any size tank!

I had three cherry shrimp. One had passed after a week and I was worried about the others. All I have is a one gallon tank. I was worried they would over mineralize my shrimp so I just put one in the tank. They are doing amazing! It’s the small tiny rock to the right, and my shrimp Bray is walking around to the left. It’s so small but it does so well! My shrimp that weren’t doing very good because they weren’t getting the minerals they needed are now very active as is my Nerite snail that hardly ever moved and is now moving around the tank. the only thing I hate that has nothing to do with the mineral rocks is that Chewy told me I would get them by November 3rd if I ordered them sunday and they didn’t come in until November 5th and i was afraid my shrimps would die before then.

Rated 5 out of 5 stars
By PeteZ on Feb 4, 2021

These were just the thing!

These did the trick. Tried Miracle shells or whatever, but they didn't help.

Rated 5 out of 5 stars
By anne on Feb 3, 2020

Pleased with them

Great product and pleased with the quality. My sis got these mineral balls for my cherry shrimp. It used to roam all over my tank but now it’s always somewhere close to the mineral rocks. Now, I am thinking to get these myself for my fishes too. Overall, they offer me a peace of mind that my aquarium is getting some essential minerals that it needs.

Rated 5 out of 5 stars
By Smiley on Oct 11, 2019

Great Soft Water Solution

New aquarium owner here. When I got my aquarium, I didn’t know that my soft water didn’t have the calcium, magnesium, and minerals fish need to be healthy. After doing some research I learned about mineral rocks and found SunGrow’s mineral rocks. I like the way they look and that they’re natural. I’m purchasing these mineral rocks because they’re a great solution to my tank’s mineral needs and the price is good. Also, they need almost zero maintenance, and I like that you can leave them whole or crumble them. If you have soft water, these rocks are a great solution to keep your fish healthy.