Nylon string aquarium safe?

100-20meter 0.2-0.6mm Transparent Non-Stretch Strong Fish Line Beading Crystal Rope Nylon Wire String For Jewelry Making Finding

6X AQUARIUM SAFE SUPERGLUE (Pure Liquid Cyanoacrylate without Harmful Additives)

Java Fern : r/Aquariums

Nylon string aquarium safe?

Easy Ways to Anchor Aquatic Plants - Bunnycart Blog

🐠6 IN 1 MULTI-FUNCTION-This aquarium Vacuum gravel cleaner combines the combined functions of gravel cleaner, water changer, algae cleaner and waste

bedee Electric Aquarium Gravel Cleaner - Automatic 6 in 1 Fish Tank Gravel Vacuum Cleaning Tools Set with Adjustable Water Flow for Water Changing

Mainstays Blue Puffer Fish Thermometer with Blue Tether Cord, Size:5.3 x 5 x 10 inches

Moss-net-mesh

Aquarium Plant Net Fauna Safe

Aquascaping Moss and Aquatic Plant Invisible Wire String – Castle Dawn Aquatics

Is string safe to use in an aquarium? I got this ship from PetSmart and it came with string but it's gotten black on parts. Anyone know what this is? : r/Aquariums