White Diamond® Crystals

Remove ammonia from your aquarium with our White Diamond ammonia neutralizing crystals. Look for it in our filter media section.
  • Remove ammonia from your aquarium with our White Diamond ammonia neutralizing crystals. Look for it in our filter media section.
  • 50 oz White Diamond® Crystals
Product No. PA0381

$15.69

Buy Now Find a Store White Diamond, 50oz In Stock

Remove ammonia from your aquarium with these ammonia neutralizing crystals.

White Diamond® Ammonia-Neutralizing Crystals are ideal for all freshwater aquariums and ponds.

White Diamond removes up to 4 times more deadly ammonia to keep water clean and fish-safe. It protects against sudden ammonia "spikes" and helps control the presence of ammonia...especially during the break-in period.

Can this be used in reef tanks? if it is used, what will happen?

Asked by: CWWW
We don't recommend it, no, because it will have no effect on the tank at all. It simply does nothing. It is for freshwater only. BREX
Answered by: BREX
Date published: 2018-10-09

Is it 100% natural zeolite ? Just want to be sure because sometimes zeolite is treated with unwanted chemicals. Also what is the granulometry ? Thank you !

Asked by: John Cacti
Yes, it is 100% natural zeolite, and the mesh is 4 x 8. BREX
Answered by: BREX
Date published: 2018-07-25

I purchased this product but it has no instructions. I have a 1000 gallon koi pond. How much do I use

Asked by: NRVKoi
The instructions are as follows: Test ammonia in parts per million (ppm). Take this number and multiply it by 0.009 to find the number of cups of zeolite you need per gallon of water. Test the water frequently and replace the zeolite as needed. Remove the zeolite once the ammonia is at 0. For a large pond like this, you would need many, many containers of White Diamond. This product is rarely used for ponds, and is intended for aquariums. You might want to buy zeolite in bulk, instead. BREX
Answered by: BREX
Date published: 2018-05-31

I am using aquarium salt @ 1 tbsp per 10 gallon in a 55 gallon FW tank. Will this salt neutralize the effects of this zeolite? 

Asked by: Aaran
No, it will not. BREX
Answered by: BREX
Date published: 2018-04-12

I bought this ammonia crystals in online retailer store, just received but it's no instructions anywhere on the container as of how to use it in pond, what dosage etc. Can you please provide instructions of how to use it. I have 3200 gallons koi pond.

Asked by: Koilover
It would take more than one container of this for a 3200 gallon pond, Koilover! Typically, it is about 1/4 cup per 10-20 gallons of water. If you are having an ammonia issue in the pond, do partial water changes of around 25%. Be sure to have a water conditioner on hand to treat tap water, if you do. BREX
Answered by: BREX
Date published: 2018-04-02

I need a media cartridge for the Penguin 150 Bio_Wheel Filter to put this into the 2nd slot of my filter canister. Where do I find this? Or what can I use in lieu of a stocking?

Asked by: NancyS
We do not make media containers that fit the 150. The only thing I know of are media bags made especially for this purpose. BREX
Answered by: BREX
Date published: 2017-08-10

Should I use the Black Diamond Blend with my goldfish? I add add aquarium salt to their normal water 1tbs in 5 gal. I heard that salt affects zeolite and releases ammonia. If not what should I use?

Asked by: Joe D
The best way to control ammonia levels is to not overstock, and to do small partial water changes weekly or bi-weekly for a goldfish tank. We would also recommend http://www.marineland.com/Products/Food-and-Water-Care/Aquarium-Bacteria.aspx instead of zeolite in your situation. BREX
Answered by: BREX
Date published: 2017-07-18

Hello, is your Clinoptilolite Zeolite Ammonia Neutralizing Crystal the same as your Ammonia Neutralizing Crystals? Different packaging?????

Asked by: Bette
Yes, they both contain the same zeolite. BREX
Answered by: BREX
Date published: 2017-07-07
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