Any one got any ideal of using porous natural vocanic in the filter?

I got these rocks from a local aqua shop.. they say is very good at purify water
water and eliminates toxic ammonia and nitrite as well as remove toxic substance???

Is it truth anyone can help me?

Hmmm,

I have a volcanic rock in my 10g and I think it has helped in establishing good bacterial colonies as it seems like a nice place for them to grow.
However, I have no specific info regarding the ammo or nitrIte.

Anybody?



S~

oh you put it in the tank?
Well, according to the instruction i was told to put it in the filter... or may be both also can...

They sell little lava rock pieces as regular biomedia for filters. It tends to be a bit dusty, for it breaks off little bits easily. It is also rather sharp, but if it is in the filter, the fish cannot run into it and get hurt. It is a fine, slightly cheaper version of ceramic cylindars, bioballs and other media that also is designed for the filter.

Lava rock, because it is blown through and through with air bubbles, has the tremendous surface area for the beneficial bacteria to colonate. That makes it an ideal biomedia for your filter.

As a substrate, or even as a large decorative rock, however, it tends to break pieces off a lot - causing debris in the tank, and can be VERY sharp. Fast goldfish can smash into it during breeding frenzies, telescopes can scrape eyes and bubble eyes should avoid it altogether.

Lava rock is inert, and does not bind or convert ammonia, nitrite or nitrate in any fashion that I know of. Most likely what they are referring to is that they are excellent platforms for beneficial bacteria which will then bind and toxify ammonia and nitrites in a cycle.

I do not think I would use this in an open tank, but it makes great biomedia in a filter!

THX daryl

Good to know. I bought a large decorative piece that stands upright with two holes in it which the fishies LOVE to swim through. I soaked it thoroughly before putting it in the tank and disinfected it, but did NOT know or think about the sharpness factor.
It wasn't until I went to my LFS and was looking at new lava rock for big tank that one of the workers there said definitely not! So, for the 40g, I have a pseudo piece of driftwood with two even larger holes for fishies.

Thanks for the info,

S~