Do seriyu stones really release calcium carbonate?

[Jinx_]

Just popped up in a video that they do.
My water already is hard, and was wondering whether this would pose a massive issue for me?

I don't plan on doing water changes. It's mainly just an experiment to see how my tank and shrimp do without me constantly meddling around. While this might be temporary, I got worried the stones would pose an issue.

 

[Jinx_]

Well... This isn't good then... I probably need to take these rocks out and get different rocks

 

[MattW]

If you want inert rocks, try lava rock. Bonus is its lightweight and porous for BB to colonise

 

[Jinx_]

If you want inert rocks, try lava rock. Bonus is its lightweight and porous for BB to colonise

I've read up more on the rocks, weathering will mostly occur in acidic and softer water. People with harder alkaline water (like mine) did not seem to have issues.

But I'll invest in a TDS meter and just closely observe.

I'd hate to tear down the hardscape with plants on it

 

[Uberhoust]

If the rocks are in the tank already, I would simply monitor the TDS values as you mentioned earlier. If you already have hard more alkaline water, they are not likely to affect the water chemistry much. There is a complex relationship between temperature of the water and the solubility of CaC03, look up "Mixing Corrosion" if you are interested. But overall solid rocks do not provide much surface area to allow the limestone to corrode into the water, and what does occur is not very fast.

 

[Jinx_]

Thank you.
I definitely will get a TDS meter and monitor the water.

I didn't think the rocks would be so problematic in my water. Thank god, wouldn't want to tear down the scape at this point. If I kept the rocks bare, I would have gotten something like petrified wood or lava rocks or something.

 

[TwoTankAmin]

Consider river rounds. Safe and they come in red, blue and black. You can get them at most garden centers and/or stone and gravel yards. The colors are dull looking there but in water they look a whole lot better. They come in a variety of sizes.