Before I do something I regret….does anyone know if you can spot dose UV to amphidinium in a successful manner? I created the contraption in the pictures with the idea of placing it on the sand bed for a minute or so in each area during the day when Amphidium is out. The orange cup is just to prevent UV overflow into areas I don’t want it going. The bulb is just a 3W UV bulb from Amazon. Any idea on exposure time to kill Dinos as well? I wouldn’t be stirring the sandbed so I’m assuming it would only impact what’s on the top layer of the sand.
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