Seachem Matrix, 4L

Best quality

I was afraid that I will get duplicate product or tempered product by seller after reading & watching matrix product review on Amazon but by this seller I got original genuine product I was happy n bought one more from same seller n again it was original n genuine.. product might be bit expensive but if it's original it works best (forget about ceramic ringlike stuff) if u have one or two fish tank invest ur Mony on it ... And it last forever no need to replace , just wash it in aquarium water that's it good as new ....

I used this in my canister filter. First bio balls then 3 layers of sponges and matrix at the bottom. Haven't checked the nitrites yet though. The internet said it works and I believed it! Genuine bottle of pumice stones.

Very good product..better than ceramic ring for bacteria biocultre..but very expensive..for 250ml Almost 500 Rs.

Aquarium very healthy

Great product

Awesome by seachem

In 250 Ml approx 200 ml are seachem Matrix and rest 50 ml normal stones. You can easily feel difference matrix are too light even after they r wet .