Green dot algaes! How do we get rid of them? - The Planted Tank Forum
 
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post #1 of 11 (permalink) Old 02-08-2013, 07:29 AM Thread Starter
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Green dot algaes! How do we get rid of them?

I saw a lot of green dot algae on the glass and on the leaves of the plants. I currently have co2, 10k 220 watts (2 white and 2 actinics, will switch to all white bulbs soon), 11 hours of photoperiod. What can I do to get rid of these nasties? My shrimps and 2 Pleco don't seem to help.
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post #2 of 11 (permalink) Old 02-08-2013, 09:49 AM
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I had the greenspot problem for a while. Manually scrub it off (might be harder than you initially think, but it will come off with elbow grease). Drop your photoperiod to 7-8 hours a day. Those things thrive on excess light. Cut it back and you should see a reduction in the prevalence of the green spots
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post #3 of 11 (permalink) Old 02-08-2013, 09:55 AM
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Lower your photo period and gsa can be triggered by low phosphate levels. Take a look at the algae portion of this forum, there's a lot of info there.
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post #4 of 11 (permalink) Old 02-08-2013, 04:29 PM
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Its definitely a photo-period problem... make sure your co2 levels are good

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post #5 of 11 (permalink) Old 02-08-2013, 05:51 PM Thread Starter
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I'll shorten the photoperiod to 8 hours and dose extra phosphate. I will also change the actinic bulbs to white. Does the pinkish hue bulb really help in growing?
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post #6 of 11 (permalink) Old 02-08-2013, 05:54 PM
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Also I use mr. clean magic eraser and it is much easier to clean off glass.
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post #7 of 11 (permalink) Old 02-08-2013, 07:10 PM
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use a razor blade, top to bottom, comes off in 1 swipe.
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post #8 of 11 (permalink) Old 02-08-2013, 08:55 PM
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Quote:
Originally Posted by chunkychun View Post
Also I use mr. clean magic eraser and it is much easier to clean off glass.
you use that on the inside?!?!?! doesnt that have chemicals on it?

I second the razor blade

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post #9 of 11 (permalink) Old 02-08-2013, 09:25 PM
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I would reduce the photo period to more like 6-8 hours and evaluate the nutrient situation in the tank. Adding more phosphate to my fertilizing regime has nearly eliminated all GSA in my tank. The little that develops is much softer. I used to pop it off with a razor and now an easy going over takes it off. I use a Mr. Clean eraser too, the original one is fine for aquarium use.
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post #10 of 11 (permalink) Old 02-08-2013, 09:52 PM Thread Starter
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Last edited by AlanLe; 02-09-2013 at 07:21 PM.
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post #11 of 11 (permalink) Old 02-11-2013, 03:29 PM
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Yeah Magic erasers are awesome. just make sure you get original without other additives. See below with more info:

Mr clean magic eraser does the job !
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