backwashed
/ˈbækwɑʃt/
verb
- Past tense of backwash: cleaned or rinsed by forcing water backward through a filter or pipe.
- She backwashed the aquarium filter to remove the algae buildup.
- The technician backwashed the water softener system last night.
- He backwashed the pool filter after the storm brought in debris.
Synonyms
adjective
- Having been cleaned or rinsed by a backward flow of water.
- They used a backwashed cartridge to save money on replacements.
- The backwashed filter was ready to be reinstalled.
- The backwashed sand in the pool filter looked much cleaner.