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Thread: DIY waterfall in metal can with GEM5® lights and Green Grabber® screen

  1. #1
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    DIY waterfall in metal can with GEM5® lights and Green Grabber® screen

    Metal cans are OK for freshwater and fish-only saltwater systems, and they block all light from escaping, so this customer made a nice DIY waterfall scrubber with 4 of the GEM5 lights in a can, and a mirror on the lid to reflect light back down...

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  2. #2

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    Leeds, UK
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    What about rust?

  3. #3
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    Just adds iron to the water. No corals, no problem.

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