You may be lucky finding it in nature but they are available in your local fish store.
Is red granite safe for aquariums.
It is typically an inert stone and will not affect water quality.
Granite from my experience is not safe.
Wayber 1 lb 460g natural pink quartz crystal stones irregular aquarium pebbles rock sands for turtle tank succulent plants vase decoration fill 1 cup 4 4 out of 5 stars 407 12 99 12.
If it fizzes its unsafe and shouldn t be used.
They are locally and sustainably sourced.
These stones are non calcareous and are ph neutral making them ideal best safe rocks for freshwater aquariums whose inhabitants require a balanced water ph level.
After finding this out the hard way i now use it to reduce my ph if needed by placing it in the aquarium for a day or three.
If anything it would make a sand like material when crushed or ground up.
A good way to test for safe rocks it to drop a couple of drops of ph down on the rock in question.
They are hardscape types of stones that are specifically created by skillful designers to provide a more realistic presence that is ideal for amano or iwagumi kind of aquascaping.
It leeches acid and drops your ph to dangerous levels.
These rocks are highly recognized for being safe rocks for freshwater aquarium.
But i definitely don t leave it in the aquarium long term.
There is absolutely no reason not to use granite in a freshwater aquarium.
It also would not make dust.
The ideal aquarium to have for using large rocks is a flat bottom acrylic tank but glass aquariums can also be used.
If you collect it yourself however make sure you sterilize it by soaking the pieces in hot water then rinsing thoroughly and allowing to cool before use so maybe i will stick with granite remnants only.