Lime Rock for new tank

[hsnydn]

Hello,
I am planning for a 50 lt nano tank as a beginner. I have many missing information and trying to find the answers by reading and searching. Actually I was not worried about the rocks that i want to start with. I decided for dry and white rock.
However, i purchased some rocks that looks like okay and posted with information saying ‘it is ideal for marine tank’. The rock is called Lime Rock, I can see partially holes and probably crashed coral but mostly covered with white chalk it is super super dusty you can see the photos.

On internet, I found some information mentiones that those kind of rocks can help for PH and calcium level. I could not be sure about it. Anbody has information for this? Should i use them after rinsing, is it risky? Product information is like;

Akvastabil - Lime rock
Pieces ranging in size from 5-20cm sold by the kilo. Great for use as a base rock in marine aquariums and hard fresh water aquariums such as Lake cichlids.‘

 

[vetteguy53081]

I personally would not ascot leeches and will have a heavy impact on ph and eventually alk

 

[FBAA]

That looks like limestone from a quarry. It's going to be very high in carbonate and perhaps calcium hydroxide depending on where it is from. I would rinse and soak it it saltwater for a week and test the water for PH and Alkalinity.

Back in the 90's I used limestone for an aquascape without any problem. Back then Live rock was very expensive. I didn't have a problem but I wasn't testing for ALK like I do today.

Also, once the rock is coated with bacteria the leaching into the system will slow but not completely stop.

 

[hsnydn]

That looks like limestone from a quarry. It's going to be very high in carbonate and perhaps calcium hydroxide depending on where it is from. I would rinse and soak it it saltwater for a week and test the water for PH and Alkalinity.

Back in the 90's I used limestone for an aquascape without any problem. Back then Live rock was very expensive. I didn't have a problem but I wasn't testing for ALK like I do today.

Also, once the rock is coated with bacteria the leaching into the system will slow but not completely stop.

Thanks, while i have chance to return the items , i will go for it. Otherwise i will do testing as you said.

 

[FBAA]

Thanks, while i have chance to return the items , i will go for it. Otherwise i will do testing as you said.

Realize that what you have is solid not porous like live/dry rock meant for a reef tank. You will have to suppliment somehow for bacteria coverage, sand, bio bricks, etc.

 

[hsnydn]

Realize that what you have is solid not porous like live/dry rock meant for a reef tank. You will have to suppliment somehow for bacteria coverage, sand, bio bricks, etc.

Actually yes, that is also another important point.