Diamond Blend®

Try our Diamond Blend aquarium carbon and ammonia neutralizing crystals. Look for it in our filter media section.
  • Try our Diamond Blend aquarium carbon and ammonia neutralizing crystals. Look for it in our filter media section.
  • 50 oz Diamond Blend®
Product No. PA0391

$10.49 - $16.19

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Aquarium carbon and ammonia neutralizing crystals combo.

Diamond Blend® Premium Activated Carbon and Ammonia-Neutralizing Crystals are ideal for new aquariums.

This special formulation of new faster-acting Black Diamond® and super-effective White Diamond® cleans and conditions aquarium water, ridding it of dissolved organic waste and odors as it removes toxic ammonia and chloramines. Outperforms other blends by as much as 4 to 1.

Diamond Blend® is rated 5.0 out of 5 by 6.
Rated 5 out of 5 by from Dimond blend This is a long lasting media that also helps control ammonia
Date published: 2015-12-21
Rated 5 out of 5 by from It works I really can't speak to the ammonia reducer but the carbon works great to reduce smell and produce crystal clear water.
Date published: 2015-11-20
Rated 5 out of 5 by from Marineland quality products I was crazy about to keep my tank clean and clear, after many tries with differents companies I bought my filter on Marineland. Now I`m sooooooooo happy, my tank is crystal clear and my friends let me tell you. Do not waist your money, all you need for fishes Marineland has it. Thank you sooooooooooo much
Date published: 2015-06-11
Rated 5 out of 5 by from Works better than expected Cleared up cloudy fish tank in hours, has kept it clear for days
Date published: 2015-02-02
Rated 5 out of 5 by from Free Shipping? Good Price if you have the $50.00 Dollar purchase to get the free shipping!
Date published: 2014-07-24
Rated 5 out of 5 by from Great price and works well! I purchased this product to decrease the number of filter changes and to get rid of disposable filters. Works great!
Date published: 2013-12-14
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does it come with applicator or bag to hold?

Asked by: jimmyp
No, you would need to have those on hand. It is just the carbon itself. BREX
Answered by: BREX
Date published: 2018-05-09

Will this reduce nitrate levels in my tank? Everything else tested fine. I'm just curious if it "balances" any other characteristics of water quality. 

Asked by: JKelley3440
No, it removes heavy metals, odors, discolorations, medications, etc. To remove nitrates, you vacuum the gravel and do partial water changes a couple of times a month minimum. Live plants can also help remove nitrates. My planted tank gets two small water changes a week, and between those and the natural plants, my nitrates are < 5 ppm. BREX
Answered by: BREX
Date published: 2018-04-09

I have a 10gal with 5 fish. I bought this, I have put 55g in a mesh bag and put it in my filter, replacing the charcoal bag. I also have biomax bag.Since I did that, I have a huge growth of algae and the water is a little bit blurry. What did I do wrong? 

Asked by: Raiden38
Well, nothing from what you have stated here appears to be anything done wrong. Algae is due to nutrients. Did you clean out the filter box? If not, you may have washed a lot of garbage back into the tank when you started it up again. Another possibility would be disruption of the biological filter if you replaced old, established media. Regardless, vacuum your gravel and do a 25% water change, remove as much algae as you can. After you refill the tank, and add your water conditioner, add Aquarium Bacteria to help boost your biological filter. BREX
Answered by: BREX
Date published: 2018-03-27

Can i use this instead of just carbon even when the ammonia goes down or do i have to take it out and swich back to carbon

Asked by: Castro
Yes, you can continue to use this, even after the ammonia levels have gone down, but at the next filter media change, you may get more benefit from using carbon alone. It depends on the types, quantities and sizes of fish you are housing. BREX
Answered by: BREX
Date published: 2017-12-18

Can I use this in my 350 bio wheel filter instead of or with my regular cartrage filter? 

Asked by: Kay1998
Yes, you just need to put it in a media container or nylon mesh bag of some sort. BREX
Answered by: BREX
Date published: 2017-10-20

How do you use it? I'm trying to add more water to my tank but I know it has chlorine and stuff so how would I use this to take all the nasty stuff out

Asked by: gwzmnem
You use a water conditioner such as Marineland Aquarium Conditioner to do that for you. With carbon, you add it to a mesh bag of some sort or media container, and place it in your filter system. It removes heavy metals, discolorations, odors, and chemicals like medications for you. BREX
Answered by: BREX
Date published: 2017-08-29

How to use for a 60 gallon tank

Asked by: John B
Size of tank does not matter, you simply add it to a mesh bag of some sort and place it in the filter. Generally, 1/4 cup per 100 gallons. BREX
Answered by: BREX
Date published: 2017-07-18

Can I use this in my filter after pouring in a bottle of Tetra Safe Start? I heard that the "crystals" this has to eliminate ammonia is removing the ammonia the beneficial bacteria in TSS need in order to grow.

Asked by: sfsdf2313123
If you are using SafeStart Plus, you don't need zeolite as well. The TSS Plus will take care of the ammonia. However, you can use this product once the ammonia level has been reduced to keep it down without adding more of the SafeStart Plus. This product will not remove ammonia fast enough to starve out the bacteria. BREX
Answered by: BREX
Date published: 2017-06-16
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