Answer:
When removing oxidation (white powder spots) on vessel, use a non-phosphate detergent
Step-by-step explanation:
Vessel maintenance is usually important to prevent any form of rusting as the vessels are made with metals which produce brown Iron oxide when exposed to moist air which are conditions of the water bodies.
It should be noted that when removing oxidation (white powder spots) on vessel, use a non-phosphate detergent. This form of detergent is usually very efficient and harmless to the organisms in the water bodies.