i'm looking for some large rocks for my freshwater axolotl tank and came across these on etsy. it says they can be for aquariums but would they be safe?
https://www.etsy.com/au/listing/473291718/beach-rocks-river-stones-1-lb-natural?ref=related-7
https://www.etsy.com/au/listing/473...search_query=aquarium rocks&ref=sr_gallery_19
https://www.etsy.com/au/listing/473291718/beach-rocks-river-stones-1-lb-natural?ref=related-7
https://www.etsy.com/au/listing/473...search_query=aquarium rocks&ref=sr_gallery_19