Marineland White Diamond Ammonia Neutralizing Crystals Filter Media, 50-oz jar

$1.97 First Time Autoship Price
this order
Save 35% (up to $20) today when you set up Autoship. 

$2.88 Autoship Price
(-5%) future orders
  • Keep saving 5% on every order
  • Get deliveries on your schedule
  • Skip, change, or cancel anytime
$3.03 Chewy Price
($0.07 /oz)
Save $9.36 (-76%)
$12.39 List Price
Promo, New Customers Only: Spend $49+, Get $20 eGift Card + Free Shipping with code: WELCOME

In Stock
FREE 1-3 day delivery on first-time orders over $35
Free 365-day returns

No interest if paid in full in 6 months on PayPal purchases of $149+. .

About This Item

Details

  • Removes toxic ammonia for a healthier aquatic environment for fish to thrive in
  • Protects against sudden ammonia "spikes" that could cause harm
  • Helps control the presence of ammonia, especially during the break-in period
  • Powerful white Diamond removes up to four times more deadly ammonia to keep water clean and fish-safe
  • These neutralizing crystals are ideal for all freshwater aquariums and ponds

Instructions

Learn More About Marineland From Our Team of Experts

Questions & Answers

8 Customer Questions


Is this safe for freshwater plants and invertebrates?

Answer by Chewy • Oct 18, 2019
This media is safe for aquariums containing live plants and invertebrates like snails.

does with work with any filter ?

Answer by Chewy • Mar 13, 2020
This product is compatible with all Marineland filters.

Is this safe for a chicken coop?

Answer by Chewy • May 23, 2022
This product was formulated for fish tanks.

Is this a naturally occurring zeolite or is it synthetic?

Answer by Chewy • Dec 23, 2021
It is a naturally occurring zeolite.

4.7
Rated 4.7 out of 5 stars
88 Ratings

29 Customer Reviews



Rated 5 out of 5 stars
By carol on Nov 1, 2025

My order came in a timely manner

My order came in a timely manner. I have been a customer of Chewy for many years. In those years I have only had a couple of mishaps. Chewy has always made things

My order came in a timely manner. I have been a customer of Chewy for many years. In those years I have only had a couple of mishaps. Chewy has always made things right for me. I am a satisfied customer of Chewy.


Rated 5 out of 5 stars
By Daniel on Oct 8, 2025

Ammonia neutralizer

I use this mixed with carbon with my cats litter and it's superior power helps out totally. A+

I use this mixed with carbon with my cats litter and it's superior power helps out totally. A+


Rated 1 out of 5 stars
By Antroclese on Nov 1, 2025

Wrong product

Wrong product not for saltwater

Wrong product not for saltwater


Rated 5 out of 5 stars
By Tammy on Jul 16, 2025

Fast acting and shipping

Good quality of media

Good quality of media


Rated 5 out of 5 stars
By Ronald on Jun 29, 2025

Delivered as Described

Thanks for everything !

Thanks for everything !


Rated 3 out of 5 stars
By joan on Jan 10, 2025

Quality

Not working as i thought it would to remove ammonoa in aquarium.

Not working as i thought it would to remove ammonoa in aquarium.


Rated 5 out of 5 stars
By Steve on Feb 17, 2025

Good mix

my go to filter media

my go to filter media


Rated 5 out of 5 stars
By David Michael on Oct 13, 2024

Marineland is a trusted name.

I need it to control ammonia levels in my goldfish aquarium.

I need it to control ammonia levels in my goldfish aquarium.


Rated 5 out of 5 stars
By Dwayne on Jul 25, 2024

Crystals for my tank

This product provides a refreshing environment for my tanks(3) . Removing the waste is important for their health

This product provides a refreshing environment for my tanks(3) . Removing the waste is important for their health


Rated 5 out of 5 stars
By Dee on Nov 3, 2024

The purpose to do the job...

Purpose completed...

Purpose completed...