Stones and rocks from sea or river or road for aquarium

[Aquarium Magic]

Hello. I made a video on how to know which stone is suitable for our aquarium without money. Thanks

 

[GaryE]

That's a very useful video.

I also picked up a rocks and minerals field guide, since larger rocks are a pain to cart home only to have them fizz. It's fine to have limestone, for example, if you have hardwater fish and your tap is low in minerals. The rock becomes a tool in our stone age fishkeeping. But a rock that fizzes on the lemon test would be a problem in my rainforest tanks.