Is the sun my "high light?"

The algae supply should run off if you have enough algae eaters. I have 4 plecos in my 100g and never see any algae. The tank sits directly in front of the window as well.

:cheers:
 
I would go with XanAvaloni's suggestion of fast-growing plants, which is addressing the cause (too much light / nutrients) rather than the symptom (algal growth).
Using animals for algae control can be a bit hit and miss.
 
I didn't catch the size of your tank before replying, but I'd definitely recommend getting a pleco. Stick with the smaller growing species (clowns, rubberlips, bristlenoses). Their voracity for eating algae vary fish by fish, but generally, you'll see a dramatic decrease in algae over night. You might also look into snails, pretty much any kind is going to make a big difference. You could try some algae eating shrimp (amanos, cherries, etc), but you won't get the dramatic results you'll see with snails and plecos.

I have one tank that for some reason always seems to have a bit of algae and I just learn to live with it. Granted, it's only on the glass. To me it only becomes a problem if it starts growing on the plant leaves (which will reduce the plants' ability to get sufficient light and to grow) or if it gets thick enough on the glass to prevent viewing the fish. One of the reasons I don't intervene too much is because the algae helps keep a healthy supply of coepepods in the tank, which my fry greatly appreciate.

Also, this is mostly just relevant if we're talking about the green, slimy type of algae and not some of the more unsightly and troublesome hair algaes or brush algaes.
 
You have virtually no plant growth to compete with the algae. I would cut way back on the lighting, basically turning them on only when you want to enjoy the look, or put in LOTs of plants. Do you have a pic of your tank? Maybe that would help us discern just how much ambient light it gets.
 
Great suggestions everyone, thank you.

I picked up a Bristlenose Pleco today, partly to help with the problem and partly because I thought he was cool. Doesn't seem like a bad decision either way. For now, I'll keep the lights the way they are and see if he makes a big enough impact. The snails were a good suggestion as well.

I'll post a picture tomorrow.
 
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