Live rock or ocean rock

[Kishan313]

Could someone please ID this for me, not sure if it is dead LR or Ocean rock? Any suggestions?

Feels quite heavy, but not 100% sure

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[mcgyvr]

It does not look like the typical porous/lightweight Florida quarry rock,etc...commonly used in this hobby..

 

[Mike Ordner]

Looks like what I call Texas holey rock which is a land based limestone and very dense.

 

[Wandering]

What do you mean by "dead LR or Ocean rock"?

Is "dead" live rock not just "rock"?

I agree with above posters that it looks dense and atypical than the porous rock reefers usually use.

 

[Kishan313]

Thanks guys,

I think it could have been "˜ocean rock' used in cichlids set ups here in the UK.

Not the "˜porous LR' we use in reef specific set ups


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[billdogg]

I would call it "Texas Holey Rock" as well. Although it is denser than typical reef rock, I like to use some in my DT because of all the little tunnels/swim-throughs it has. I would guess that my DT is about 30% THR. It is calcium based so is perfectly ok to use, it just won't support as much denitrifying bacteria as a similarly sized piece of more porous rock can.

 

[Lancerman]

If you are new to the hobby I suggest getting cured live rock from a LFS to make your cycle a lot faster. If not you can buy more porous dry dead rock from amazon and cycle with it. Looking at that rock, I would only use for freshwater for a planted tank and not in my reef tank. It is heavy since its more dense, and therefore would not be suitable for hosting beneficial nitrifying bacteria. I can't tell its composition by looking at it, but I'd be cautious about using it. Good luck.