Slime algae???

Kattycake · 03/28/2018, 09:21 PM

I genuinely have no idea what this is. It’s a circular-ish dark green/brown slimy looking patch growing on the rock. I don’t see it anywhere else. While it is near the top of the tank it is in a shadowy spot. It doesn’t look stringy like the brown slime algae I found in the algae identification files. I am at a loss. It looks almost like mold. Anyone have any idea what this is, how I get rid of it, and what risk does it pose/what problems does it indicate?. These are the best images I can get. It grows in a circular pattern, is not hard stuck to the surface like coraline, and I have no idea where my live rock originated.

Subsea · 03/29/2018, 06:02 AM

From the adjectives that you used, I gather you don’t like it. Use a toothbrush soaked in hydrogen peroxide and scrub it off. The hydrogen peroxide will oxidize the slime and turn to water.

I can’t tell what you have from the picture. Try this link at Reef Cleaners.
https://www.reefcleaners.org/nuisance-algae-id-guide

Kattycake · 03/29/2018, 06:04 AM

Quote:

Originally Posted by Subsea

From the adjectives that you used, I gather you don’t like it. Use a toothbrush soaked in hydrogen peroxide and brush it off. The hydrogen peroxide will oxidize the slime and turn to water.

I can’t tell what you have from the picture. Try this link at Reef Cleaners.
https://www.reefcleaners.org/nuisance-algae-id-guide

Thank you for your help. I actually looked there earlier and couldn’t find it. But, I think I figured out that it is an unattractive color of sponge.

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Michael Hoaster · 03/29/2018, 04:01 PM

Kind of looks like an encrusting sponge, in a shady spot.

vlangel · 03/30/2018, 12:13 PM

I lean toward Michael's thought, I also think it looks like a sponge. I personally encourage sponge growth.

Kattycake · 03/30/2018, 01:28 PM

I agree with you both. After looking it up I also think sponge. I have yellow sponge elsewhere, I just never saw sponge that color. Glad I don’t have to fight a pest!!

Kattycake · 03/30/2018, 01:28 PM

Thanks so much!

03/29/2018, 06:02 AM	#2
Subsea Registered Member Join Date: Dec 2006 Location: Austin, Tx Posts: 1,882	From the adjectives that you used, I gather you don’t like it. Use a toothbrush soaked in hydrogen peroxide and scrub it off. The hydrogen peroxide will oxidize the slime and turn to water. I can’t tell what you have from the picture. Try this link at Reef Cleaners. https://www.reefcleaners.org/nuisance-algae-id-guide __________________ Laissez les bons temps rouler, Patrick Castille Current Tank Info: 10,000G. Greenhouse Macro Growout

03/29/2018, 04:01 PM	#4
Michael Hoaster Registered Seaweedist Join Date: Feb 2004 Location: Boulder, CO Posts: 5,807	Kind of looks like an encrusting sponge, in a shady spot. __________________ As many naturalists and environmentalists have suggested, we should set aside our arrogance, our desire to conquer and control everything, and walk hand in hand with Mother Nature. -Walter Adey Current Tank Info: 180g Seagrass Sandbar Lagoon, START DATE November 28, 2018

03/30/2018, 01:28 PM	#6
Kattycake Registered Member Join Date: Mar 2018 Location: Alabama Posts: 5	Yes I agree with you both. After looking it up I also think sponge. I have yellow sponge elsewhere, I just never saw sponge that color. Glad I don’t have to fight a pest!!

03/30/2018, 12:13 PM	#5
vlangel Registered Member Join Date: Aug 2010 Posts: 2,409	I lean toward Michael's thought, I also think it looks like a sponge. I personally encourage sponge growth.