Brightwell AquaticsXPort BIO Brick – Ultra-Porous Aragonite-Infused Ceramic Biological Media for Reef, Marine & Freshwater Aquariums – Boosts Clarity, Removes Ammonia, Nitrites, Phosphates

I put as many of these in my sump as I can. Great for keeping numbers low.

Tried a generic alternative and huge regrets. The generic caused massive silica spike and of course tons of brown slime everywhere in the tank because of it. Absolutely 0 issues with this product and also 0 regret. I learned my lesson the hard way.

First of all I would like to say that I live in Turkey and bought 2 of these 3 months apart. So Amozon has shipped this item to me twice and havent had any problem whatsoever due to shipping. So kudos to Amazon.The first block has been in my tank since July and I havent seen any disintegration or degradation. My ammonia was never detectable so i assume with the live rock in the tank its doing its job.

So far it looks like this is all I will need for a long time. It’s been performing good but it does take a few months to see the results. The good thing is that it keeps in after it starts going.

Perfect size for my sump, let's a ton of water pass through. Holds a ton of beneficial bacteria

magnifico producto, es un excelente albergue de bacterias nitrificantes, mi skimmer trabaja como loco...

Works great. Does what it says

Keeps your nutrients low!

Consigliato per chi ama l’acquario Marino con poche rocce in stile acquascaping. Usato nel mio 600 litri mi ha permesso di avviare e mantenere la vasca con soli 35 kg di rocce vive. Il resto lo fa questo fantastico prodotto.

Excelente filtro biológico con un poco de refuerzo con cemento para coral en las orillas dura años

Ottimo prodotto

Producto bueno para tener en el acuario

Gran productor por sus funciones