The first time they responded to black-out and I never checked under microscope.Following!
I’m here for this journey; please try not to give up with saltwater. I know, easier said than done, but I just want you to know I’m here with you.
Curious, what dinos are you dealing with? Just curious. I won’t give any unsolicited advice.
The second time I had a microscope and checked and they were prorocentrum (id’ed here). Black-out did not work.
This time I haven’t checked yet. I’m just a little tired of it. It’s slowly getting worse and not responding to my dosing silicates.
Really, if you have advice, shoot !