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Old 02/12/2018, 05:53 PM   #1
Otiss
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HELP ID weird sponge? Fungus?

I have had this white slimy substance growing on top of my rocks for the last month or so. Unknown what it is. Blows off the rocks fairly easy. Tank has been setup going on just over a year or so.


Let me know if you have any ideas. Only thing that has changed is my alk was slightly low.

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Old 02/13/2018, 08:31 AM   #2
Navig8tr
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Sponges tend not to be slimy and wouldn't blow off the rock easily. They also generally do not grow in well lit areas. My guess would be some sort of bacterial growth. Do you dose a carbon source?


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Old 02/13/2018, 05:47 PM   #3
Otiss
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None at all. Just run a skimmer and filter socks. Run some Gfo and carbon in a reactor. Any great ideas on how to get rid of it?


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Old 02/13/2018, 07:28 PM   #4
Navig8tr
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It could be a form of cyano or dinoflagellates. A drop in alk could cause either. Increase alk. Not sure what your water flow is but an increase in flow can help as well.


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Old 02/13/2018, 07:38 PM   #5
DesertReefT4r
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Is this a newer tank? Looks like dinos to me. If it blows off i would increase water flow. Skim wet, water changes, lights out for 3 days or longer if no corals, removes/suck out as much as you can. Have you tested po4?


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Tank history 29g tropical ,55g cichlid tank, 20H softy reef, 29g mixed reef, 20H brackish goby & puffer tank, 55g mixed reef, 6g Nanocube softy lps reef, 40B sps reef, 75g sps reef, 75g sps reef in bu

Current Tank Info: 75g sps reef build in the works.
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Old 02/13/2018, 07:48 PM   #6
Bent
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Looks like a plain old bacterial mat to me...


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Current Tank Info: 75g DT, 30G refugium, 10g chaeto tank, 50g stock tank basement sump
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Old 02/13/2018, 08:47 PM   #7
Otiss
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I don't think it's dinos. I had those in a different system about a year ago. Po4 is check often with a Hannah checker. Usually .03-.07. I have a big skimmer that skims well. I have very good flow within the tank. Tank has been up over a year

Ben, any idea how to get rid of a bacterial may?


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Old 02/14/2018, 04:17 PM   #8
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You don’t happen to be vinegar or vodka dosing do you?


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Current Tank Info: 75g DT, 30G refugium, 10g chaeto tank, 50g stock tank basement sump
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Old 02/15/2018, 05:02 PM   #9
Otiss
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Nope, I am not dosing anything but alk and calcium.


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Old 02/15/2018, 05:44 PM   #10
HBtank
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chrysophytes?

http://www.reefcentral.com/forums/sh....php?t=2514055

http://www.reefcentral.com/forums/sh....php?t=2439205


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Current Tank Info: 80g tank, re-starting a reef after a zoanthid nudibranch plauge, followed by months of steady and unstoppable STN/RTN, crashed; stayed FOWLR for a couple years, currently an aiptasia dominated reef tank with fishies and BERGHIA
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