help me ID an cell that's taking over my tank!

[Cnidoblast]

Sorry for the poor microscope image but I hope it's enough to get an I.D

This is causing huge swatches of brown sludge that bothers coral

 

[Cnidoblast]

 

[Cnidoblast]

 

[Cnidoblast]

Forgot to mention they also appear to be flagellated!!!

 

[taricha]

prorocentrum dinos :-(

This is causing huge swatches of brown sludge that bothers coral

where the brown mucus mats attach to coral tissue, the coral tissue often doesn't live very long.

 

[Cnidoblast]

I've been treating tank with metroplex according to instructions on back - second dose of metronidazole was given today

Hope it kills them

 

[Cnidoblast]

Turns out these things make a nasty toxin

Hope it doesn't wipe out whole frag system!

 

[taricha]

Turns out these things make a nasty toxin

Hope it doesn't wipe out whole frag system!

In theory the toxin from these guys ought to be mitigated by GAC, but if they are attaching directly to a coral, it doesn't really matter how much carbon you run.

 

[Cnidoblast]

Not responding to drug treatment!!!

 

[Cnidoblast]

Tank is pretty mutch dead at this point..... Thanks for the id @taricha