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Unread 09/05/2016, 04:22 PM   #1
Shanincalgary
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What is this?

I have two of these growing on my glass? I have had the tank set up for awhile.


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File Type: jpg black algae.jpg (54.3 KB, 68 views)
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Unread 09/05/2016, 08:10 PM   #2
Dkuhlmann
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Probably dinoflagellates


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Previous tanks: 200 gal fowlr 9" Emperor Angel and many different butterfly fish 4" maroon clown and several other fish, 50 gal sump, 40 gal mixed reef/fish mostly softies and LPS.

Current Tank Info: 40b 750 gph 45 lbs lr, 2"-3" sand, 165w full spectrum dimable LED, 20 gal sump/refugium 30 lbs lr, Bak Pak 2 skimmer, 4" sock temp 79-80, sg 1.026, NH3 0, NO2 0, NO3 <10, ph 8.2, calc 400, mag 1300
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Unread 09/05/2016, 09:13 PM   #3
Bent
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Hard to say...

Could be dinos, could be some form of bacteria, cyano or otherwise.

More pics?


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Current Tank Info: 75g DT, 30G refugium, 10g chaeto tank, 50g stock tank basement sump
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Unread 09/06/2016, 05:22 AM   #4
mcgyvr
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Siphon it out during routine water changes..
Make sure nitrates/phosphates are very low..

Looks like cyanobacteria (usually red but comes in all sorts of colors)


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Unread 09/06/2016, 06:02 AM   #5
Ron Reefman
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Looks like dinos to me.


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