Algae scrubbers, using bubbling upflow or vertical waterfall versions, are now also being used to filter aquaria and ponds.
ˈælɡiː skɹˈʌbɚz, jˈuːzɪŋ bˈʌblɪŋ ˈʌpfloʊ ɔːɹ vˈɜːɾɪkəl wˈɔːɾɚfˌɔːl vˈɜːʒənz, ɑːɹ nˈaʊ ˈɔːlsoʊ bˌiːɪŋ jˈuːzd tə fˈɪltɚɹ ɐkwˈɛɹiə ænd pˈɑːndz.