The Planted Tank Forum - View Single Post - Need advice - algae and nitrate problem in planted tank
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post #6 of (permalink) Old 01-04-2013, 05:42 PM
wkndracer
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Join Date: Mar 2009
Location: Citrus County,Florida
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If that green easily wipes off the glass with just a rub of your finger then it's GDA (green dust algae). My tanks have it pop up when I'm low on phosphate and high on nitrates. Suggest if it's not a huge PITA to clean the glass and do a large >50% WC right after. Change the bulb in the fixture. Some bulbs shift value faster than others, cheaper fill gas and the spectrum changes within a year while others seem to hold value for several years (save the old bulb in the tube supplied with the new one).

HTH

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2-75g planted, 5-55g planted, 5-20g planted, 110g w/30g sump, 8-10g, Refugium, doghouse/newbie
2012 update adding table top pleco pans & a 90g (Nutz)
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