ID for weird growth on dry rock during cycle

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Muffin87

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This is weirding me out a lot because the tank is taking forever to cycle, and now I'm getting these growths out of nowhere.
I've been cycling a barebottom tank with dry rock from Aquaforest for weeks now. I used Bightwell Microbacter Start XLM with Brightwell Microbacter QuickCycl (Ammonium Chloride).
The tank has only ever got ambient light, and all the equipment from the previous tank (Clarisea and 2 gyres) was out of water for months and washed an RO/DI; however, something is growing on the rock. What is it? Chrysophytes?
Total Ammonia NH3+NH4 (API/Redsea)1.5 ppm to 2 ppm
NH3 (Seachem Ammonia Badge)0.05 ppm
NO2 (API/Salifert)0 to 0.1
NO3 (Hanna Low Range Nitrate)1.94 ppm
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IMG_20220309_222007.jpg
 
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vetteguy53081

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It’s called chrysophytes and is bacterial
You will have to remove rock and place in a container of tank water and scrub off with a toothbrush
Return to tank, reduce white light intensity and add snails such as chitons, ninja star, astrea and nerite
 
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