Is a household water softener okay to use in an aquarium? My water where I am is pretty hard and we do use water softner, but the only issue is that the softner we use is added to a big bin that water is pumped through, then filtered back out of into our main system.
So... Would adding a couple chunks of water softner be unsafe for my fish??
So... Would adding a couple chunks of water softner be unsafe for my fish??