I have a problem with recurring slick oil layer on the surface of the water. I have duck weed and lettuce floaters, about 8 shrimps and 6 neon tetras. I feed the neons flakes sparingly and shrimps live on algae in the tank. I suspect some of the oil come from my cooking (aerosols), I have cut down on the grease, but even when I don't cook there seem to be some oil gathered at the surface. Does normal floating plant produce oil when it dies decomposes? Im not sure where the oil is coming from.
skrimpfan
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