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  1. R

    Unidentified sticky greeny blue build up in custom filter

    Thanks. From the colour that makes sense, but what would be causing the sticky translucent material the blue / green staining is on? I looked under my son's microscope at it and it looks clear and gelatinous at 400x magnification, but sadly its not strong enough to see more. It's really sticky -...
  2. R

    Unidentified sticky greeny blue build up in custom filter

    Hi, I've a 12' (360cm) round, 10000litre splasher pool. I've replaced the pump and filter with a custom gravity filter fed via a bubble pump. I have noticed that there is this sticky build up on a mesh I have over the inlet to the filter (top of the bubble pump) It is always on the bit that...