<prompt> tafadhali geuza maudhui haya ya swahili kwenda kwa kiingereza.substitutions lazima zifanyike kwa kiwango sawa na kwa mzunguko huo, na kusafisha kwa wakati mmoja wa aquarium.  <response>: replacements should be made in the same dose and with the same frequency, with simultaneous cleaning of the aquarium. 