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I’m not good at this, but I’m thinking amphidinium. Hope someone better at ID can help. @saltyhog
Thanks. Do you have any tips for defeating this? Increasing nutrients and using a UV sterilizer maybe?Prorocentrum! Like ostreopsis, but sandier, and more ornery.
Yes. Those two steps. Be sure when you are adding nutrients, (assuming your tank is low in the first place) that you are adding inorganic simple phosphate and nitrate. Heavier feeding or adding complex organics has lower success.
UV is helpful, however prorocentrum is less willing to go into the water. So after a few days you may need to do a short blackout in order to push more cells in contact with the UV.
Is this the right "stump remover" to get?