I removed a moss tree from my fish tank along with a large quantity of moss and plants and my blue dream shrimp are rapidly dying and the water is cloudy/smelly. There is also this weird white stuff on the plants that is growing. The shrimp are all hanging as close to the surface as possible but the 4 oto catfish in the tank seem fine. Whats weird about these deaths compared to the usual shrimp death where their bodies normally turn white, here their bodies are staying blue but the back of their heads is turning a bright pink/red. All the inhabitants of the tank were fine before I removed the tree/plants.
Additional details and images are below. Any help you can give would be greatly appreciated since they are actively struggling as we speak and idk what to do.
Fish tank is 7.9 Gal Fluval EBI Ė substrate is black diamond abhrasive sand ( Inert ), driftwood was manzanita, fully cycled tank for over 5-6 months.
I panicked after noticing the shrimp at the top and dieing and did a ~40% water change incase there was anything in the soil that got released, but that didnít seem to help.
The water was cloudy, so I though maybe I removed too much of the beneficial bacteria or kicked off a new cycle, so I went and got a new bottle of safe start and dumped it in, that didnít seem to help.
The shrimp were grouped at the surface so I thought it might be a flow/oxygen thing, I cleaned out my filter aswell with fish tank water to remove some excess waste and increase the flow and pointed it in a way which the surface water is definitely flowing down to the bottom. I shut off my c02 aswell.
Less than 5 ppm nitrate as of yesterday and today.
Prior to the re-scape I had been dosing ich-x to treat one oto, when I did the rescape it was the last day and I did not add anymore since.
1: Fish tank before rescape: https://i.imgur.com/EQ2pmXg.jpg
2: Fish tank after rescape: https://imgur.com/Yc6Lg3V
3: weird white stuff 1 day after rescape: https://imgur.com/qkFmCiQ
4: Dead shrimp: https://imgur.com/tv73UIg