MarineLand Diamond Media Premium Activated Carbon for Crystal Clear Aquarium Water - Blacks & Grays

KENNETH: Works as it should

United States on Sep 25, 2023

Matty: Great value for what you pay for! Easy to use I rated 3 stars just because the rinsing process takes forever and feels like it's never ending. other wise perfect for your tank and does exactly what it needs to!

United States on Aug 24, 2023

Mike A: Quality carbon should be extremely lightweight and should sizzle when it gets wet. Pet store junk is heavy, pelletized, and doesn’t - which means it won’t work well and will also leach phosphate that causes algae.

United States on Aug 09, 2023

Virginia Milito: My aquarium was getting a little cloudy I needed an additional Factor this product worked great I would recommend it highly

United States on Aug 06, 2023

Eduardo DelgadoEduardo Delgado: Se sumergió hasta que saliera el aire y se colocó cerca de la bomba para que pasará el agua por el mismo, muy funcional!

Mexico on Mar 04, 2022

pblair: It will do the trick and clear and clean your water of yellowness. However it is very fine grain, and I have to sift in a specific grade of strainer to get out all the small pieces, that would other wise fall out of the replacement filter insert upon rinsing and also subsequently into the tank. Since it is bituminous cola, it will last about 2 weeks max, you can leave it in for more time but it is just sitting in there holding max saturation. Its fine nature will lend to it clogging in 2 weeks anyways with fish waste, even as an after poly filter stage position which is a must with this brand. For the price, its ok, as it needs more labor to sift and change out more frequently I put in 1 whole cup every 2 weeks into the plastic gray filter insert replacement media baskets and the water stays more than crystal clear for 13 days. I will now try 1/4th (cup) the carbon to see if water changes only can keep the yellow out of the Koi fish tank to an acceptable minimum. As I already have ozone filtration and wet-dry filtration in combo with wet filtration (porous gravel), combined with a measured scoop for the food pellets amount. I weekly rinse clean my poly filter pads in the 75 gal...

United States on Dec 17, 2021

Mykatie: Great product!

Canada on Jul 09, 2021

Mary G.: El envase no viene lleno, sin embargo, contiene la cantidad indicada por el vendedor.
El precio es conveniente para mi, ya que lo uso en pequeñas cantidades para prevenir desarrollo de hongos en plantas.

Mexico on Aug 12, 2020

Frederic Belley: Malgré la pandémie, l'expédition a été très rapide satisfait du produit, merci.

Canada on Apr 23, 2020

Josh Levinson: Works very well. Was very effective at almost completely removing the garbage smell from my garage (we have to keep our garbage bin in the garage).

The size of each piece of charcoal is very good (small pebble size), and there's not too much fine powder.

What I did was fill a few women's stockings with the charcoal (about 6 inches in length), tie up the end, and then let it sit in the garage. Four such stockings worth was enough to do the trick... perhaps less would have also sufficed. If I wanted to make them even more effective, I could hang them on the inside of the garbage bin (by sticking a hook to the inside wall, for example).

To fill those 4 stockings, I used about 2/3 of the container. I was expecting it to last longer, but I guess it's not too bad, since hopefully those 4 stockings will be effective for quite a while.

Canada on May 09, 2018