no need lah Damien, use Top(serbuk pencuci) to remove the oil lar. it say no sunlight also no bad smell mah, hahaha!!!
anyway, use powerhead and turn over to absorp the surface oil o that the cotton will filter up the oil. then throw the cotton away loh. there is so many choices to clean up the oil surface. mine pond(live by panther group and seaweed) also have some oil but i didnt clean it up, found out that 2 more days later the oil stick at the side of every corner of the pond. then i remove it away. i didnt put the powerhead upside down, but i put a tube inside pump by air pump(to keep the temperature down - really works 28-26 Celcius ) so that it push the oil to the side and stick at the corner.
owner also can use tissues cause it will absorp the oil more easily. hahahahahahah!!!!!!!!!!!!!! kidding only!!!!!!!!!!!!!!!!!!
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