some people here make the HUGE mistake of equating the resistance to chemicals of a 150 pound westernized human with a pristine tropical fish from the rainforest that has a mass of just a few grams......
wich if you pardon my French is pretty dumb
"we" also smoke tobacco wich contains nicotine; it doesn't kill us.
"we" use all kinds of nasty turpentine based paints in our houses, but we don't die from the fumes when it dies
"we" drive cars and sniff an awful lot of gasoline fumes everytime we fill it up
want to test that on your fish, because the resistance of a fish is equal to that of a human being?
I dare @wheels & Apistomaster to toss in a single roll-up cigarette in one of their fishtanks
actually it's a theoretical experiment
the next day ALL your fish will be as dead as last weeks' mutton!
same for painting that door. you try painting a door with turpentine-containing paint in a room with fish tanks; keep the windows closed, see what it'll do with your pets......
humans, especially westernized humans, qualify as live walking toxic waste. we are incredible resistant to massive loads of pollution. medications, drugs, car fumes, industrial pollution, messed up food with all kinds of nasty add-ons; we go on and on.
and only die of some if we keep up the bad habit of abusing for decades
for example, no one will die of a single sigarette, but it can and does eradicate a whole fishtank and quite a large one at that.
we are tough as an old boot and by now used to harmful substances
tropical fish are not!
next to that; mammals are different from fish. a LOT
aquatic life is much more fragile and easily killed by stuff that wouldn't faze insects or mammals at all.
Bas has followed a study in chemistry, he knows his stuff
I have followed a study in biology and I DO know a lot about animal physiology, especially those of primair aquatic animals
like fish. they are completely different from our physiology and chemistry in a lot of ways.
there's a lot of things that are specifically dangerousd for aquatic life, including fish.
among the most lethal are hydro-carbons of the turpentine family, nicotine, heavy metallic solutions and bleach.