bar keepers friend over bleach and vinegar any day lol! but
it is what it is; to each their own... but i like bar keepers friend.
i have been using this product for over 20+ years to clean fish
tanks and not once have i had a fish or any live stock kept in
the said cleaned tank die because of this product; not one death.
also it doesn't pierce your nose like bleach does lol... and no i dont
run carbon or purigen in any of my tanks or setups only mech &
bio, more bio, some more bio and some more bio lol... srsly though
it is a great product and i recommend it to anyone and everyone
that asks me how to clean their tank and make it look like new
again. also many hobbyist have used and still use this product to
the day like i do, heck i always have a can or 2 in the house just
because i have a bad habit of impulse buying tanks with nice
foot prints im always cleaning tanks and selling them or giving
them away to my friends and what not.