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Old 12/31/2006, 01:34 PM
electricd7 electricd7 is offline
Registered Member
Join Date: Nov 2006
Posts: 108
Brown algae on new setup


I just setup a 46Gal tank about 2 weeks ago. It is 75lbs of sand (10lbs of live), 15lbs of live rock and about 100lbs of base rock. I have 4x96W power compact bulbs on it (1 Actinic 12hours per day, 3 10k on for 8hours.) In the last 3 days I have noticed a brown aglae growing on the surfaces of rocks and sand. Can anyone tell me what this is, and what I can do about it? Thanks!


Old 12/31/2006, 01:45 PM
staticx staticx is offline
Moved On
Join Date: Nov 2006
Location: oregon
Posts: 824
Welcome to diatoms, nothing to worry about they will go away
Old 12/31/2006, 02:05 PM
Lizz85 Lizz85 is offline
Registered Member
Join Date: Oct 2006
Location: Frederick, MD
Posts: 67
I agree. Those are diatoms, are common in new tanks, and will go away one day almost as quickly as they appeared.
Old 12/31/2006, 02:56 PM
loves saltwater loves saltwater is offline
Premium Member
Join Date: Oct 2006
Location: Katy,Tx
Posts: 942
Did you set up your tank with tap water or ro/di ? Diatoms will come and go.I have a small problem with them now and my tank is 3 months old...
Does anyone have the number to Reef Keepers Anonymous!

AM- 0
Rite- 0
Rate- 0
Phos- 0
PH- 8.0
SG- 1.026
Cal- 420
KH- 8.0 dKH
Alk- 2.51 meg/L
Mag- 1350

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