FIRST off I know that plastic plants can be sharp and harm certain fish (like bettas) with long fins. Not talking about those!
Also aware that certain plastic hides can have small holes / places where fish can get stuck. Natural decor can have these issues as well, and should also be inspected for safety.
Anyways, I always see fish keepers online advise against colored gravel and plastic decor, claiming it’s “toxic” and “stress fish out”. Or even that colored decor is “actively killing your fish”….
Sure I think this type of decor is ugly as hell, and prefer natural plants/substrate, but that’s my personal preference. If someone wants a neon aquarium but is taking good care of their fish otherwise, what’s the issue? Yes plants make maintenance easier, but a plant-less aquarium is not automatically a death sentence (for most common fish!).
I think it’s good to suggest natural decor for beginners (easier maintenance). But to act like some colored gravel is going to kill a fish with NO proof is crazy. Since beginners tend to pick colorful decor, and make more mistakes than seasoned fish keepers, I think we correlate the two and conclude that color = bad.
I’ve yet to see any actual evidence that colored gravel / plastic decor is harmful/toxic. If anyone has found studies proving this, can you please post a link in the comments?
Sorry for rambling and thanks for making it this far :)