robmcd;820580; said:How much is a whack?
CHOMPERS;821911; said:It is right in between a love tap and a severe beating.
ouch

Oddball;823500; said:The surface area of the terracotta has so little beneficial surface area that you may as well have nothing in the filter. It's the junk we used "back in the day", along with toy soldiers and lava rock rubble, before better materials were found. Use scrubbie pads or pizza-sliced up floor stripper pads. At least they'll do a decent job without breaking the bank.