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Old 09-30-2012, 05:01 AM   #1
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nitrates and phosphates help

My tank is a little over a year old and I have noticed nitrates are starting to rise on the API kit its hard to tell but its either 5.0 or 10ppm they look like the same color. Also phosphates I can't get below .46ppm on the Hanna checker. I have tried the Kent phosphate sponge which pulled it down from almost 1.0ppm. I use rodi water and do 2 week water changes on a 180g tank of 30g. Could it be the sponge block that's in the sump just before the return pump it a adhi 45 sump. I am running chaeto in the center of the sump. Any ideas? Should I do vodka dosing? I know after 2 things of the phosphate sponge I see I wasted $40. Also do I need the sponge in the sump or can I take it out and just let the water run straight to the return pump?


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Old 09-30-2012, 08:52 AM   #2
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Clean yur sponge ...do u run gfo reactor? If not get one for phosphate , nitrate will come down with pwcs just up them a little.bit
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nitrates, phosphates

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