diatoms dinoflagellates

I've been struggling with dino for the last six months. Now there is still brown scurf on some of the subgrowths. To me it looks like diatoms in the form of sticks (just want to hear confirmation).

Hi everyone, So as the title says, I’ve been fighting amphidinium dinos for not exactly sure how long since I had a good amount of snails die before I really got to the root of the problem, but it’s been about 2 weeks of dosing nitrate, phosphate, and silicate along with bacteria, photo, and...