Fish tank rock cleaner

作者: Michael R. Zweifel

DOI:

关键词: Fish tankWaste managementEnvironmental engineeringEngineering

摘要: A fish tank cleaning system comprising a water pump, hose connected to the stone tool housing, lower end of housing being open engage rocks on bottom an aquarium, stirring rod moveably extending through for rocks, other outlet said disposed above housing.

参考文章(2)
Edgar A Powers, Gravel cleaner for aquariums ,(1965)