Yellow rubber algae

[SantaMonica]

Many people, including me, get large parts of the screen that turn into a thick yellow growth that feels rubbery. This is caused by flow that was cut off, by algae growing up into the slot. As the slot gets cut off and the flow reduces, the algae that was growing on the screen in that flow now has no flow. And the yellow rubbery algae is what results. It does not appear to hurt anything, but it surely is not effective at filtering, since there is no water flowing over it for it to filter. One solution is to make cross-cuts in the slot. Another is to put a light-shield over the slot. Another is to point the bulbs further down the screen to they don't shine as much on the slot.

[worley]

I'm afraid to say that the slot cutting doesn't work for me in this case, I still get the yellow algae as the slots end up getting clogged nearly as easily, however, maybe I haven't cut them wide enough? I would suggest sheilding the top of the mesh from light would be the best option.