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RE: Lava Rock
Hi Jake,
As to the metals and salts which could leach out of the rock I have not had
any problems nor have I heard of any. Lava rock is in relatively common
usage at this point in fresh water setups. Although there are more
possibilities for chemical interaction in salt water I have also never heard
of any such problems but I am not currently doing any salt water tanks.
With regard to washing the rock, I assume that any product marketed by Eheim
or Hagen should be safe. As far as rock you buy elsewhere it is possible
that it may have come into contact with some contaminant. There is no way to
know for sure that someone did not accidentally spill a jug of weed killer
on it at the garden supply store. I usually boil just about anything I put
into my fish tanks where it is possible.
I suppose that there is some risk involved in putting anything into your
fish tanks from the great outdoors. But if you compare it to the risk you
take every time you bring a fish home from your LFS and introduce it to your
aquarium, I think you will find that it is minimal or at least acceptable.
Use good judgment, do what you can to clean the rock, put the rock into one
fish tank first and make sure that the test fish are alright. Caution is
always to be encouraged. But paranoia is the reason that Eheim gets the big
bucks for its rocks.
Best regards,
-RJ-
-----Original Message-----
From: owner-killietalk at aka_org [mailto:owner-killietalk at aka_org]On
Behalf Of jake levi
Sent: Wednesday, April 04, 2001 7:28 AM
To: killietalk at aka_org
Subject: RE: Lava Rock
Hi RJ
I was wondering on any 'anecdotal' info on the list on
what is working, I am quite familiar on the 'live
rock' as I make, culture and sell live rock :-)
Visits to Rochester pet shops will let you see a lot
of it in the better shops although you may have to ask
which is which.
My question/concern on the lava rock is that being of
volcanic origin it will have different compositions,
and may well have metallics/salts that could leach
out.
Has anyone had a problem with this? Seems it would be
wise to presoak it and rinse a few times before using?
jake
--- -RJ- <TranquilityBase at NetZero_Net> wrote:
> Hi Jake,
>
> There is a difference between the different size
> lava rock. The smaller
> pieces have the benefit of greater surface area for
> normal denitrafication.
> In this form it is most useful in corner, canister
> or drip filters. Larger
> pieces have a larger anoxic interior area for more
> complete denitrification,
> including the breakdown of nitrates. This is of
> course the principal behind
> "live rock" in salt water which is used in large
> pieces. Lava rock is an
> amazingly useful material.
>
> Adding small pieces to your filter system makes a
> great media for superior
> conventional denitrafication. Adding large chunks to
> your aquarium makes for
> a great passive denitrator as well as an attractive
> decoration.
>
> Best regards,
>
> -RJ-
>
> -----Original Message-----
> From: owner-killietalk at aka_org
> [mailto:owner-killietalk at aka_org]On
> Behalf Of jake levi
> Sent: Tuesday, April 03, 2001 7:12 AM
> To: killietalk at aka_org
> Subject: RE: Lava Rock
>
>
> Is there an 'optimal size' of this? Would lava rock
> 'gravel' have more surface area? What I have read so
> far makes it sound well worth using, wondering if
> there is an optimal size?
> jake
>
> --- "Stoecker,Michael,FRANKLIN PARK,NC&C"
> <michael.stoecker at us_nestle.com> wrote:
> > Sorry for the stupidity. It should have read
> > "...200 lbs./cubic yard more
> > than the red." Correct the next sentence as well.
> > mike stoecker
> >
> > > -----Original Message-----
> > > From: Jeremy Adams [SMTP:killifish at home_com]
> > > Sent: Monday, April 02, 2001 1:58 PM
> > > To: killietalk at aka_org
> > > Subject: Re:
> > >
> > > > I noticed that the black type weighed 200
> > lbs./ton more than the red. A
> > > > quick call to them, and I found out that the
> > black is less porous than
> > > the
> > > > red and hence more dense and thus weighs more
> > per ton.
> > > >
> > > Did it weigh more per ton or more per a given
> > volume? To me this sounds
> > > like, which is heavier, a pound of lead or a
> pound
> > of feathers.
> > >
> > > Just curious and thanks for the info. Luckily
> for
> > me, I have 'tons' of
> > > this stuff about 70 miles away from where I
> live.
> > I collected several
> > > buckets a few years ago to use in my fish pond
> > filters. I have never
> > > actually used it in my pond filters yet, but I
> am
> > using it in a canister
> > > filter on a 140 gallon tank.
> > >
> > > Jeremy
> > >
> > > --
> > >
> > >
> > >
> > > ~~~~~~~~~~~~~My Life Story~~~~~~~~~~~~~~~~
> > > Jeremy Adams - Corvallis, Oregon USA
> > > Killifish-Frogs-Toads-Aquatic Plants-Fish Ponds
> > > Bombina orientalis web page:
> > > <http://members.home.net/killifish/bombina.html>
> > > Loyal Macintosh user since 1988
> > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > >
> > >
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