Gideyon Posted June 2, 2021 Share Posted June 2, 2021 I have a piece of IAL baffling the output of my HOB. I've done it this way for a while. But the latest leaf I just now noticed a white substance on it, and also a different type of film on the water. The white part is above water. Anyone know what this is? Link to comment Share on other sites More sharing options...
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