Everything is dying from some white film

[prisse67]

My tank is almost 5 years I’ve been growing coral and everything has been so healthy. Perimeters are in check, except the alkalinity Doser keeps messing up so it did drop to 5.5 but I slowly raised it to 7.8 now. This weird white stuff engulfed my brain coral. It wiped out my hairy mushrooms and is attacking my candy cane coral. My Trochus snails are dying and so are the bristle worms. The only things that don’t see to bothered are the fish and some zoas. I attached pics maybe someone has seen this.

 

[besskurz]

Can you post pictures in white light?

Not sure what it can be but it might help to identify.

 

[vetteguy53081]

My tank is almost 5 years I’ve been growing coral and everything has been so healthy. Perimeters are in check, except the alkalinity Doser keeps messing up so it did drop to 5.5 but I slowly raised it to 7.8 now. This weird white stuff engulfed my brain coral. It wiped out my hairy mushrooms and is attacking my candy cane coral. My Trochus snails are dying and so are the bristle worms. The only things that don’t see to bothered are the fish and some zoas. I attached pics maybe someone has seen this.

Pics are too dark to see or determine anything.
May be bacterial, fungal or even invasive sponge

 

[prisse67]

Pics are too dark to see or determine anything.
May be bacterial, fungal or even invasive sponge

I added some better pics

 

[prisse67]

Can you post pictures in white light?

Not sure what it can be but it might help to identify.

Posted some better pics thanks for any suggestions

 

[vetteguy53081]

Posted some better pics thanks for any suggestions

Appears to be either cyano or sponge in which im leaning towards sponge. Using a turkey baster , bacteria will blow off with gentle burst whereas sponge will remain and feel slimy or leathery to the touch

 

[MnFish1]

It looks like brown jelly disease - I do not think sponge can grow to cover that many corals so quickly. Also a type of cyano?