Help I.D mystery algae

[toadstool_paradise]

So I used to have a beautiful 30g reef tank with fish and no algae. Then disaster stuck when my fish all got sick and died. After they died a mystery algae crept in. I’ve tried multiple 50% water changes, black out, but nothing works. See video for algae details.

Green, like a sheet that covers rocks, sand, and glass. Basically wipes away but comes back the next few days even with huge water changes.

Salinity 1.025
Temp 76
Ammonia 0
Nitrites 0
Nitrates 5-10


Can anyone help me figure out how to treat this horrible algae without breaking down the entire tank and starting over?

 

[DanyL]

This looks like green cyano.
Not sure if the same principles apply to the green variant or not, though it probably does.

What’s your phosphate?

 

[toadstool_paradise]

This looks like green cyano.
Not sure if the same principles apply to the green variant or not, though it probably does.

What’s your phosphate?

Ooh yeah that’s what it looks like. I misplaced my phosphate test somewhere, so not sure as of right now. Life kind of got in the way the past few months and the tank was neglected because of the depression of losing all my fish.

 

[DanyL]

I’m sorry for you loss, it’s always depressing to loose a fish or coral, but you must move forward and get that tank back in shape and enjoy it once again.

Find the phosphate test, stabilize your nutrients and see how it goes.
I also suggest increasing the flow and siphoning the cyano, as in this state it can harm your corals.

 

[toadstool_paradise]

I’m sorry for you loss, it’s always depressing to loose a fish or coral, but you must move forward and get that tank back in shape and enjoy it once again.

Find the phosphate test, stabilize your nutrients and see how it goes.
I also suggest increasing the flow and siphoning the cyano, as in this state it can harm your corals.

Will do, I’ll try turning off white light and getting some pods, and beneficial bacteria to add to the tank.

It’s so hard watching the hard work I put in the tank go away. I definitely need to try to get it back in shape so I can enjoy it once again.

 

[DanyL]

Sounds like a good plan, keep us updated.
Good luck!