dead white live rock as bio-filter sump

[Zero Sugar]

this might be a pretty silly post but im just wondering if those dead live rock (natural white, no bleach) is any good for bio filter in discus sump tank?

i know that these are great bio filter for marine tanks but im not sure if it will be the same for baceria produces in freshwater tank

will these rocks raise pH?? i know that the live one does

i ask my local fish shop they said these rock will work on both salt and freshwater tank.

the sump set up is a standard 30" tank with bio ball and these white rocks...

Thank you,

added info on the rock
these live rocks are quite small aprox 1"-3" and sold in a small package of 0.5 kilogram in my contry it fix perfectly on the sump

 

[ziggy2]

They will develop a bacterial colony. They are very porus for bacteria to grow in. They could raise the Ph a bit.

 

[dogofwar]

I wouldn't recommend for discus if it has calcium carbonate in it. Test with vinergar...if it fizzes...it has CaCO3...

Otherwise, go ahead.

Matt

 

[Zero Sugar]

dogofwar... thank you
i ran the test and it frizzes.... i brought 11 bags now it useless lol

any other media you recommend to replace the rock?

the now the sump has wool filter and plastic meshes for the mech filter and bio ball for bio.

 

[Zero Sugar]

another question...

is there a way to neutralize these calcium carbonate?
once the rock stop frizz will it able to use in discus tank?

 

[burntrubber]

Sell it to someone that's going to use it for african lake cichlids.