Two algae type pests - help

[hopperjl16]

I have a biocube 29, 2 years old, parameters all wnl. Recently I battled gha, that’s under control now. Then cyano, treated with chemiclean and now gone. But now I’m left with two issues: one is a brownish algae that waxes and wanes with my lighting (see pic one), and two is this stiff gray-green stuff growing up out of my sand (see pic 2). I thought the latter was just detritus, but when I tried to vacuum it up it literally is growing up from the sand. Any advice?

 

[saltyfilmfolks]

The first could be diatoms maybe , the tubes look like snails.

Are you running GFO?

 

[hopperjl16]

The tubes easily break up if I stir the sand.
No on the gfo (I honestly don’t have a great understanding of gfo). I have an Intank media rack with poly filter on top, purigen in middle, and chemipure elite in bottom.

 

[saltyfilmfolks]

You don’t see little arms sticking out when you feed or at night?

Some of the granular ferric oxides , iron, require rinsing befor use or they rust. I’m not sure if the chem Media you are using use a gfo or aluminum or need rinsing.

Downs the brown stuff have a texture? Slimey dusty etc?

 

[hopperjl16]

You don’t see little arms sticking out when you feed or at night?

Some of the granular ferric oxides , iron, require rinsing befor use or they rust. I’m not sure if the chem Media you are using use a gfo or aluminum or need rinsing.

Downs the brown stuff have a texture? Slimey dusty etc?

I would lean toward slimy, def not dusty.
Chemipure does need to be rinsed first which I always do.

No arms sticking out tonight of the grey/green stuff.

 

[saltyfilmfolks]

The little green nubs are a mystery to me.
Let’s #reefsquad.

But I’d guess the red brown to be an algae.

 

[JaimeAdams]

The brown is Dinoflagellates

 

[reefwiser]

The tubes in the sand are Vermetid snails just visited a club member that had them in the sand like that.

 

[jsker]

What kind of lights are you running?

 

[hopperjl16]

The brown is Dinoflagellates

I’ve looked at a lot of pics of dinoflagellates, and I never seen the bubbles or “snotty” appearance with my stuff. It’s always smooth, sometimes a long single string coming off it. I should prob just try to look under a microscope and check, they’re supposed to be easy to ID right?

 

[hopperjl16]

What kind of lights are you running?

Stock lights from my biocube. 10,000K and actinic. Just changed the bulbs a couple weeks ago.

 

[jsker]

I would say the 10,000k being new is the cause, may try to cut back and hour on the 10,000k

 

[hopperjl16]

I would say the 10,000k being new is the cause, may try to cut back and hour on the 10,000k

Ahh, didn’t consider that. Thanks, will try.