front of tank is turning brown

scott270

Active Member
i have a 75 fowlr with 55 lbs of arogonite and 15 lbs of cc and it is turning brown in the front of the tank what is this
 

twoods71

Active Member
If the brown looks like a dust or film it may be diatoms.
Diatoms need silicates in the water to grow.
Silicates can come from different sources but the most common source is from tap water.
You can refer to my post For all who have nuisance algae problems.
in the reef board for more information on diatoms as well as other kinds of nuisance algae.
 
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