If it is a freshwater tank, can try some some surface feeding fish like Platies, Mollies, Swordtails or Guppies. I used Swordtails and they cleared the scum.----------------
On 4/1/2003 8:27:08 AM
Hi, is there any other way of removing those oil layer on the surface of the tank beside using skimmer?
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Or can try absorbing the oil with newspaper/ tissue.
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