Wolf

I poured a load of white vinegar onto the rock and there was no fizzing at all. The rock in question looks like this



I emailed Savanna rocks and they replied with:
"All our rock is tested in South Africa to see if it is safe for fish and will not alter the Ph. Aswell as testing the rock for the first tests we also spot test again and I carry out tests myself and have never found this rock to alter the Ph. Elephant skin is the same rock make up as as Pagoda stone but just been eroded in a different manner, and this rock again has been sold to the Aquatic market for many years with no problems. I am 100% sure this rock is perfectly safe for your aquarium, but if you have any other questions I would be more than happy to help you. I hope this information helps,"

Seems OK but I just can't help thinking there may be issues as it definately looks very sandstoney and iron rich...

thanks for the rock info man.really helpfull

updated to add Jasper

Hi I bought these Rocks yesterday for my new tank, they are from B & Q, I`ve heard the River Cobbles are ok but after another look these maybe slightly different some of them were definately labelled River Cobbles but some were from another basket (described as Long-something ??) , after cleaning them up there are lines of sediment in the rocks and small metallic particles can be seen under the light.

Not a Great Picture I know but do you think will be ok ?

Any help appreciated
Nick

Rocks Pic Here

This post has been edited by Nick Sw: May 16 2006, 07:15 PM

I have used similar in my tank before with no adverse effects

Good Thanks now I`ve just got to find a pan big enough to boil them.
Thanks Wolf .

sorry to be a nuisance but what is this rock? Ive got a bunch of them lying around in the garden, its heavy and ive put white wine vinegar on it and it didnt seem to do anything. Thanks

looks like sandstone to me.
if you rub it with your fingers, do you make sand?

mmmm, no, but a harder object like a knife wears in down easily.

i have a feeling i should no this but - i have slate in my back garden , if it passes the vinegar test and i boil it as stated - it wont alter any of my tank stats will it?

is there any type of rock which would be good for small fig8 puffers?? because i would like to put some stones in ther.

Slate is inert in itself, the only slate to avoid is ones that have iron ore in it (rusty veigns/staining) and green slate (contains copper ore)


the best way to answer that is
tell us what you were thinking of adding and we can say yes or no.

The pebbles that you buy in supermarkets, garden centres etc. for use in water displays, vases for cut flowers etc. Are these ok?

They are not labled but can supply photo if you wish.

Cheers

yes they are safe , expensive but safe

This post has been edited by The-Wolf: Jul 20 2006, 01:00 PM

Bump!!......Excellent information. Definitely sticky material

i hope river rocks are ok i ve seen some people actually put those in and im just curious if it works too they come all colors and the ones i have are natural colorings

It's Iron Stone... Hey Wolf, you haven't told us whether it's safe or not

I've used it in my aquariums before and no harm done!

personally I'd not use it.
ironstone has a chemical composition of (approx) per 88.85 gm
Fe 89.86 %, Hydrogen 1.13 %, Oxygen 8.01 % & other base elements 1%

the large ammount of Fe maybe benificial to a dutch aquarium but one with fish could be harmful

Just wondering, I picked these up from the local beach, it is freshwater, and I've done the vinegar test on all of them, nothing happened...I've now boiled for 25minutes, can you tell me if any of them arent ok for my tank. (I think alot are granite or quartz, its just a few I'm unsure of)




this one I'm worried about