There are some things you can\u2019t put in an aquarium. Fish are sensitive, and any small slip-up can cause illness or worse in your fish tank. A recent trend is to 3D print something and use it as decor in your aquarium. But how safe is that?<\/p>\n\n\n\n
3D-printed objects are aquarium-safe if they\u2019re printed with toxic-free filament. The best toxic-free filament to use is pure PETG and food-safe ABS or PLA. But since PLA isn\u2019t waterproof, you need to apply a food-safe epoxy resin or spray-on coolant on a PLA object before putting it in an aquarium.<\/strong><\/p>\n\n\n\n It can be overwhelming to know which 3D-printed objects can go in your aquarium. I\u2019ll try to clear the air on this topic so you can confidently print aquarium-safe 3D objects. But first, let\u2019s talk about filaments.<\/p>\n\n\n\t\t\t\t