Yes! silica sand isn't harmful to fish because they breathe through their gills and it excludes most things that are similar to silica sand
To get more sand
No. Unless you put it in a tank with sand.
Well, I would put the sand in before putting anything else in. If you already have accessories, fish, and water, then it might be difficult. But you may be able to put the sand in if you get as close as you can to the bottom to avoid stirring things up. :)
Gold is an inert metal (not dangerous to fish). You can put it into a fish tank if you choose too.
No.
No, it is not safe to put lucky bamboo in your fish tank as it can release toxins that are harmful to fish.
Umm you could buy a fish tank and put it in your room just make a fish then buy a fish it will get in side the fish tank in your you don't have to do nothing just buy a fish and a fish tank and it is put in your room
I think that the fish rock might be a little too hard for your hermit crab because he needs soft enough sand to be able to molt and when they molt their skin is sensitive so the fish rock will probably make him uncomfortable.
It could damage the internal PVC of the filter and cause sand to get in your pool.
no
no
Yes ofcourse you can have them in your saltwater aquarium. You have to provide some space in your tank with good sand and feeding sand dollars is easy, for they mostly eat suspended organic matters and other fish wastes.