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Scott Hieber asks:
>Has anyone had problems with poorly designed bioballs?
I have. I don't recall the mfg. but Home Depot carries some like them or
they used to. The "balls" are essentially made up of parallel tubes (~1/4"
OD, 1/16" ID) of varying lengths arranged so as to give the impression of a
sphere. IME, they clogged quickly and were difficult to clean. I actually
had to sit and poke a length of weed-whacker chord through each tube to
ensure they were clear. Pieces of tube would sometimes break off during
handling, too. I ended up replacing them with Aqua Medic's
Bactoballs. I've been much, much happier with them.