- Same food as always fed across all 3 tanks (now back to two)
- I'm the house chef but haven't boiled potatoes or veg in a long time (steamed, baked or fried!)
- No aerosols are used in the living room where the tanks are located, only small tea lights in salt lamps, away from the aquarium.
- I did wonder about the plants but I moved the big one out of the room and its the same thing after a few hours with the film appearing.
- No new substrates, plants, decore or fish and the bottle I use for water changes is always filled from the same tap.
- Water marks certainly seem worse in the past week or so, and checking on ST's website there have been a lot more work taking place in the villages surrounding ours.