Rock advice

[Ash1910]

Hi everyone,
I need a bit of advice please. I currently have a 125L tank running tropical and I love rocks and all things natural. A friend of mine has just downsized his marine tank and has some really good sized rock he wants to give me. Would i be able to put them in my tank? I dont mind cleaning them and that im just wondering thats all Any advice would be appreciated. Thank you

 

[PheonixKingZ]

Definitely not. Most saltwater rock with drastically raise your pH.

If you want rock for freshwater tanks, I recommend dragon rock. It’s kinda pricey, but it looks really good.

 

[Colin_T]

Hi and welcome to the forum

It depends on what fish you want to keep in your tank. Most rocks in marine tanks are limestone or sandstone and consist of calcium carbonate. This will raise the pH, and slightly raise the GH.

Limestone and sandstone can push the pH up to 8.5 depending on how much you add.

If you want to keep soft water fishes like tetras, barbs, rasboras, angelfish, gouramis or Corydoras, they prefer water with a pH below 7.0.

If you keep livebearers like mollies, guppies, platies or swordtails, or rainbowfish, goldfish or African Rift Lake cichlids, then you can add limestone to their tank because they come from water with a pH above 7.0.

Africa's Rift Lakes actually have limestone rocks in them and Lake Tanganyika has a pH above 8.5 due to the limestone and other minerals in the water.

 

[Ash1910]

I currently have 3 bala sharks, 8 danios and 2 bristlenoes in the tank. Now we are looking at getting a bigger tank very soon as I no the balas can grow quite big, but we've only had them a couple of month now. The rocks ive been given are quite large also. Altogother I think its about 30-40kg

 

[itiwhetu]

It all depends on the rock. If they are granite cool if they are limestone not cool

 

[PheonixKingZ]

Pictures?

 

[Ash1910]

Im just out at work at the moment. When I get home tonight ill take some and post on here. Thank you everyone for your advice its much appreciated.

 

[Ash1910]

Hi everyone,
Here's a picture of the rocks. The 2.5L paint tub is just show you the size in comparison.
Don't mind the mess its in my shed ??

 

[Colin_T]

dead coral skeleton, they are calcium based and will raise the pH, and the GH a little bit.

 

[ember04]

If you are bringing over salt rock defiantly wash and wash and wash and wash. there are no beneficial bacteria which will be able to suvive from salt to fresh so don't worry

 

[PheonixKingZ]

I concur with @Colin_T.