The Planted Tank Forum - View Single Post - Using purigen in a sponge filter
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Old 11-07-2013, 03:50 AM   #21
Cokers
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My tank has been running since September and I have placed 3 O+ tabs in my tank. What I will probably do is to take a cup and scoop up the substrate where I have placed the tabs and try to remove the O+ pellets by hand. I will also continue to monitor my nitrates to see how fast it rises over the following days. After today's 40% water change, it is a 10-20ppm.
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5.5 Gallon College Tank
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