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#1
September 8th 04, 04:44 PM
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"Dr Engelbert Buxbaum" wrote in message
... dH wrote: I have an established 55-gallon freshwater tank stocked with about 30 Lemon Tetras, Blackskirts and Zebra Danios. A Magnum 350 and dual pad filter take care of the filtration. Recently, a rainbow-hued 'essence' has appeared on the water top. The bubbles keep it pushed away, but otherwise it covers the water. The fish aren't stressed and continue to breed, the filters are cleaned, 10% water change weekly, 25% monthly. What could this multi-hued entity be? Has anybody put their hand in the tank without washing first? Use any hand lotion lately? Maybe it is some kind of oil. dwhite 
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#2
September 10th 04, 05:47 PM
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"Dan White" wrote in message t... Has anybody put their hand in the tank without washing first? Use any hand lotion lately? Maybe it is some kind of oil. dwhite i thought this at first too--but i can skim the top clean and it returns gradually in 3 days. occam's razor hasn't helped much...
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