I have 3 large cylinder style air stones I use for brewing teas in a 5 gal bucket. Now 2 of them are clogged badly. I have boiled, bleached, hydrogen peroxide soap boiled dried b Po iled cleaned blah blah blah. I meed new stones my question os does anyone use different style air stones I have a 45lpm pump I use for teas I was looking and maybe buying 3 4 Inch round stones but want opinions before i purchased and what yall think is best