Dang yeah that doesn’t sound good. My bottle just looked like water and was clear. Maybe a slight hint of yellow. But that was in 2019.Yes, they are sent in phyto. I’m sure they’re dead. They were never swimming and now it’s just a big black clump on the bottom of the bottle.
it’s possible though since it’s full of phyto that it just settled to the bottom. Phyto looks pretty dark/black when it’s all settled at the bottom of the bottle. If it doesn’t smell foul it might be ok still.