i didnt touch (no cuttings and almost no ferts ) my tank for 3 weeks because i had to re decorate my apt. - during this 3 weeks i had to move the tank to another room - with 1-2 hours of direct sun for two days . didnt get green water or so but i got this slimy green layer on water surface.
how do i get it out?
the water below are clear as they used to be, the plants are doing great and so are the fish. please help me before ill make mistakes