Dinoflagellates help please

[leesst200]

I have a Dinoflagellates problem.
I have reduced lighting and feeding, also added activated carbon to the filtr.
Is there anything else I should do?
How long should it be before it clears up?

Thanks.:help:

 

[Catpicklesdog]

What are your parameters? My guess is you'll have some phosphates so I would use Rowaphos or similar. How many powerheads do you have and how are they placed? Increased flow can help keep it at bay whilst you're getting rid of it.

Any chance you can post a photo?

 

[leesst200]

some pics for you, there not very good shots im afraid.:headshake2: