Help identifying dino and resolution

[ONO]

I'm really losing this battle and hoping to get some help here before I give up on this hobby. I've had these, I believe dino for the past 4 months or so and have been running UV sterilizer (Aqua Ultraviolet 25 Watt unit) for a couple of months. I've done total blackout for 3 days 4 different times while running UV and it clears up but returns in about a week. My phosphates and nitrates have never been low. In fact, I started running GFO because my phosphates got up to .50 and now back to .15 now. So my last ditch effort was to buy this cheap microscope to get help to ID what I have. Can I get some help identifying what type this is and the remedy for it? Thanks so much!

 

[taricha]

prorocentrum, the most frustrating kind of dino. But I think you sensed that already.

 

[ryshark]

I'm really losing this battle and hoping to get some help here before I give up on this hobby. I've had these, I believe dino for the past 4 months or so and have been running UV sterilizer (Aqua Ultraviolet 25 Watt unit) for a couple of months. I've done total blackout for 3 days 4 different times while running UV and it clears up but returns in about a week. My phosphates and nitrates have never been low. In fact, I started running GFO because my phosphates got up to .50 and now back to .15 now. So my last ditch effort was to buy this cheap microscope to get help to ID what I have. Can I get some help identifying what type this is and the remedy for it? Thanks so much!

I think it is prorocentrum too. I just beat these in less than 2-weeks, however, I didn't have nearly as many as you in my microscope slides. UV and blackouts aren't going to do much of anything for this type of dinos. It is a different plan of attack. You need to grow a lot of diatoms, I say a lot because I don't see many diatoms in your pics, probably because of the GFO you were running. I can write it up on what I did, just can't right now.