That's exactly the problem I had... It has to do with newly cycled tanks, they will go away on their own. I hear Otto's are goo for this type of job.. they will rid your tank of Diatoms in no time.
Is this tank newly set-up? Brown algae -- Diatoms -- usually grow in a newly cycled/established tank, but they will go away on there own. How many total watts are on the tank?
About 2 months running.. Not sure of the wattage, I'm running LED light strips from Marineland (2 fixtures, each one is the "Doublebright" model.)
I have 4 otos, not touching it.
The problem is, even if they go away on their own, by the time they're gone, so are most of my plants, from being smothered.
Not always. My tank had been cycled for a year and has never had an algae problem, its completely established yet i have a huge diatom problem now. My ottos don't help, and i have had this problem going on 3 months. I wipe- it comes back and so on.
My problem is the silicates in my local water are rather high, so filter your water before adding it, R/O (i wouldn't bother with this though, doesn't always work, is expensive etc.) or add some kind of silicates/ phosphate remover....I have no idea if any of that works...but its worth a shot.
OH! And i have added an extra filter to the tank so increased water flow with carbon. This will help take away extra nutrients and help stop extra diatoms from establishing.
Maybe I'll try running an additional filter. Thanks.
What? no! don't let any sunlight fall on your tank, that's bad!
Even just a sliver of sunlight, for about 30 mins/day?
Get some otos they take care the rest. Further read here
I have four otos. All they do is (when I turn the light on in the morning) FREAK OUT and smash through as many of my delicate plants as they can in the least amount of time, uprooting. I think they get extra points for each uprooted plant. It's like a sport for them. Smashing their faces into the dirt, finding a nice patch of UG or HC that's just delicately managed to attach to the substrate, and then wiggling as violently as possible right on top of it.