There have been thousands of books published giving the requirements of different species of fish. There have even been whole large books written giving the basic requirements of just one species of fish. To post what you are asking for is impossible to do in Wikki.
Photosynthesis needs sunlight & carbon dioxide besides water
They need the oxygen in the water to survive like fish and every thing else.
Only water should be put into a dehumidifier. If you try to add anything else to it, you might end up ruining the dehumidifier.
deosent need electric..
You need solid reasoning, evidence, and proof
It is best that all fish have a filter besides Betta fish. Betta fish don't need filters cause the filter pushes them over with their big fins. Goldfish should have a filter on there tank because they are often overfed. If you have a filter you won't have to change the water as often. The only fish that shouldn't have a filer in captivity are Betta fish.
because fish need it to breathe. just like humans need air to breate. to fish, water is air.
Saltwater fish require salt water, and fresh water fish need fresh water, you can't mix them, or the fish will die. You need to look at each individual fishes needs as to what temp they need their water to be. There are some saltwater fish that can survive in fresh water, but it is not healthy for them.
Depends on the fish.
Carbon dioxide Is another thing plants need for Photosynthesis!:)
If you are American, European or Canadian, it's all you need, besides some money and vague notions of Spanish; if you are from any other country besides those I just mentioned, you also need a visa.
Fresh Water