Algae identify/treat Saltwater Aquarium

[Vet246]

I have had a lot of what I think to be as white algae growth show up. Can someone help me identify it and get rid of it. My water parameters are as follows: pH: 8.2, amonia: 0, nitrite: 0, nitrate: 25, calcium: 420, alk: 4, phosphate: 0, salinity: 1.022, magnesium: 1012.5. I've been dosing my tank daily with nitrate and phosphate reducer. I have 75 gallon tank plus 40 gallon refugium/skimmer. 2 clowns, 2 leopard wrasse, copper banded butterflyfish, foxface, dragon goby, scooter dragonet, scarlet shrimp, sally Lightfoot crab, anemone crab, turbo snails, 3 anemones, a few corals, 50 lbs live rock

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[Vet246]

I circled the algae

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[mike007]

Never seen or heard of white algae before. Your alk and mag levels are low. Alk should be 8-10 mag 1400. White stuff has to be something else can't really tell by photos.

 

[Vet246]

Here is another pic...hopefully better. It is in the middle. White/beige...looks kinda furry.

 

[Vet246]

Sorry I could not get the picture to upload from my phone...here it is.

 

[zemuss]

I have this same stuff and want to know what it is.

 

[Vet246]

Does anyone have a clue what this stuff is?

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[Reefing Madness]

Wonder if its the start of Cotton Candy Algae.

 

[Mike J.]

I wish I could tell you what it is. I still don't know. I had it along with that tough lime green algae I see in your photo. I do know that I had it when I had low alkalinity and high Calcium. Alkalinity at 4 is a nightmare to an SPS tank and would probably cause RTN to every coral in a tank. (You should raise you alkalinity and magnesium.) Anyway I got my alkalinity up and it went away along with that lime green algae that's like Cyano but much tougher. I should say that I was using Kent salt at the time and changed at the same time as I raised my alkalinity. So, it could have been from the salt or from the high calcium and low alkalinity that the salt caused. You wouldn't happen to using Kent salt?

 

[Reefing Madness]

No, I've heard bad stories about Kent not mixing to specs to often.

 

[zemuss]

I am using H2Ocean Pro + salt. All i know is it accumulates like algae but if I use turkey baster it blows off like detritus.

"Z"

 

[zemuss]

Bump..

 

[Reefing Madness]

Are you mixing the salt into the DT?

 

[zemuss]

no i mix my salt over night to the temp of the tank and use a filter media to siphon the water into the tank.

 

[Reefing Madness]

Try another batch of the Sat Mix, possibility that you got a bad batch.