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Old 01/19/2016, 12:13 PM   #2735
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Join Date: Apr 2011
Location: Wrigleyville
Posts: 103
Originally Posted by tastyfish View Post
Personally I'd ditch the UV, it's indiscriminate and you want to increase the competing bacteria etc in the water column. The dinoflagellates would disperse into the water column with a blackout anyway, use the skimmer and siphon to remove them.
UV worked for me on one occasion without the dirty method so it most definitely is a viable option. There is enough bacteria on the surface area of the rocks and sand that you are not disrupting the bacteria population by zapping a few in the water column. A skimmer by itself isn't enough to eradicate dinoflagellates or this thread would never have reached 100+ pages.

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