[Trevor W]

I recently purchased my second Vertex Rx-U 1.5 media reactor. I also purchased a bag of Vertex ROX 0.8 activated carbon. Anyone that has used or seen this carbon will know just how small the grains are. I instantly foreseen a problem with the size of the pores of the supplied sponges VS the size of the grains of carbon. Sure enough upon filling the reactor with 100ml of ROX it instantly started working its way into and through the factory sponges. A quick google search turned up nothing. I than remembered that I had a couple small sheets of Poret foam. It is often used in the freshwater side of the hobby and it truly is the best foam to use in any aquarium application. Seemed like a no brainer. Who would of thought that after spending $$$ on media reactors I would be having to DIY it to properly work with the same brand of carbon lol.

Factory Sponge



Poret Sponge