Usually to toxic for fish tanks...https://www.lazada.sg/products/simu...eting-terracepatio-i283636998-s451715142.html
Intend to lay this across the bottom of my 180 gallon tank.
If what is stated is true.. I be looking at 4m x 25m worth of fake grass for $10
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Here's some ideas for fish tank decorations:
Arrowheads (obsidian looks wicked cool),real skulls, replica dinosaur or other ancient skull replicas, real arrows without broad heads(could go with a "things hunters loose" theme),shed deer antlers are a favorite of mine (also used them as coat hangers) as well as old bones, both of which are easy to find if you know where to look.
Various gemstones and rocks make awesome decor.
I've used fishing lures without hooks, which some fish enjoy playing with.
Could make some pictographs, petroglyphs or stone carvings to set a mood.
Many dead plant leaves and sticks work as well