Is this GHA? Or is there something else?

[jcosta98]

Hi,

Can someone help identify this algae/organisms , that grow even though I have very few No3 and Po4 (0.2 No3 and 0.024 Po4) , and I also never overfeed?
It is weird, it is only growing on zones directly affected by light and on the refugium . I think it is 2 different types, one of them is probably GHA, as it is filamentous and green out of water. The one on the rocks, Astraea Snails clean it but it grows right back.

Thank you!

 

[AfaceInTheCrowd]

First picture is “cheato”, often used in refugiums for nutrient control.
Your heater does look like the start of GHA, so I would suggest taking it out and scrubbing it, (allow to cool first, else it may crack).
The last two pictures look like a bloom of sorts, is this a new tank?

 

[jcosta98]

Hi , I know it's cheato , I was talking about the "fuzz" growing on the chaeto and walls, heater etc.

The tank is almost 2 year old, but had to move houses recently ( 25 days ago) where I changed just the sand. That on the rocks, it moves along with the current, and does not grow taller then that. It used to grow on the flow pump, but it does not anymore so it looks like it is slowly going off (not sure).

Thank you!

 

[AfaceInTheCrowd]

What are your tests showing?

Does the fuzz have air bubbles in it?

 

[jcosta98]

What are your tests showing?

Does the fuzz have air bubbles in it?

No bubbles, the bubbles that are trapped are bubbles that sometimes go in the flow.

Current water params:

dKH: 10.5dKH
Ca: 435ppm
Mg: 1440ppm
NO3: 0.2ppm
PO4: 0.024ppm

Fish never overfeed, I feed small pallets and stop dropping when they stop eating, only 1-2 max go to waste. Started feeding Reef Roids 2 weeks ago, but this was here before that.

Thanks

 

[AfaceInTheCrowd]

Looks like Chrysophytes.....It’s type of bacterial bloom, treating it is similar to dealing with dinoflagellates iirc

 

[jcosta98]

So, Dosing some Bacteria and a black out ? How much time Blackout? Did you already had any experience with it?

Thank you!

 

[NowGlazeIT]

So, Dosing some Bacteria and a black out ? How much time Blackout? Did you already had any experience with it?

Thank you!

How’s it going? I’ve been dealing with a similar algae

 

[jcosta98]

How’s it going? I’ve been dealing with a similar algae

So I'm reaching Week 9 of using Vibrant and all I can tell is that it worked, this algae is almost completely erased from my reef, only have some leftovers!

 

[NowGlazeIT]

So I'm reaching Week 9 of using Vibrant and all I can tell is that it worked, this algae is almost completely erased from my reef, only have some leftovers!

Nice!!! I’ll give vibrant a try