![Need help: what is this on the surface? Looks like oil. New tank 8 weeks, JBL Sansibar Dark, just a few plants and seiyru stones (from another of my tanks) never saw Need help: what is this on the surface? Looks like oil. New tank 8 weeks, JBL Sansibar Dark, just a few plants and seiyru stones (from another of my tanks) never saw](https://preview.redd.it/59p7tq1ohr381.jpg?auto=webp&s=2647a1af9616ca455ae77c476cebfb61b8efb9c0)
Need help: what is this on the surface? Looks like oil. New tank 8 weeks, JBL Sansibar Dark, just a few plants and seiyru stones (from another of my tanks) never saw
ZooMarket - JBL Sansibar River, 10 kg / 2400 din, Dark 10 kg / 2445 din, 5 kg / 1300 din i White 10kg / 2420 din | Facebook
![JBL Sansibar DARK 5 kg, Dark substrate for freshwater and saltwater aquariums price in UAE | Amazon UAE | kanbkam JBL Sansibar DARK 5 kg, Dark substrate for freshwater and saltwater aquariums price in UAE | Amazon UAE | kanbkam](https://images-na.ssl-images-amazon.com/images/I/81FhTCEFkGL._AC_SL500_.jpg)