What is this on my glass?

um_fan5

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So over the last 2 water changes I switched from IORC to Brightwell Aquatics NeoMarine and started 2 parts from BRS.
Now I have this:

This tank has been up since 8/20 and never had this before!
Any ideas?
 

Aquachristik

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Could it be bacterial? Possibly cyano? I say that because it collects together in a slimy way instead of dissipating like green or brown dust algae.
 
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um_fan5

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What's your CUC?
Astraea Turbo Snail x 3
Banded Trochus Snail x 1
Nassarius Snail x 1
Mexican Turbo Snail x 2
Dwarf Blue Leg Hermit x 3
Blood Red Fire Shrimp x 1
Sand Sifting Sea Star x 1

Test from last week Wed
I test for Nitrate and Phos Bi-weekly
Alk, Ca and Mag from my Trident

Alk 8.2 pH 7.9
Mg 1266 Ammo 0.0
Ca 425 Nitrite 0.0
Phos 0.1 Nitrate 10
 

davidcalgary29

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Could it be bacterial? Possibly cyano? I say that because it collects together in a slimy way instead of dissipating like green or brown dust algae.
It's possible. It looks photosynthetic, in any case. Have you thought about going lights-out for a few days?
 
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um_fan5

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It's possible. It looks photosynthetic, in any case. Have you thought about going lights-out for a few days?
I noticed it this morning as I got coffee and on checked on the DT and QT.

Over the las month, I've changed a few thing that may contributed.
Changed salt
Switched from Chaeto to ATS
2 Part Dosing
 

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