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Old 05-15-2011, 01:44 PM   #1
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new 55 gal

im going from a 13 gal to a 55 and im not sure how much water i should change at a time currently with my 13 im doin 1/3 each water change every other day because my tank is over stocked. so how much should i take out at a time and how often (55 gal) thank you
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Old 05-15-2011, 01:47 PM   #2
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Test your water daily. Im assuming this tank isn't cycled? If you see signs of ammo or nitrates especially, change out enough water so that your levels of ammo is 0 and nitrates are 10.
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Old 05-15-2011, 02:53 PM   #3
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Once the tank cycles your bioload and filtration will determine when and how much water is need to be exchanged to keep the nitrates in check. I tend to overstock the majority of my tanks but also over filter them, so in my case weekly water changes of 50-60% keep my nitrates below 20ppm. If your understocked a smaller change might be acceptable. Check your water parameters weekly after your cycle to determine your schedule.
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Old 05-15-2011, 05:13 PM   #4
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Yep, me too hukit. Two of my three tanks are overstocked, but like you are overfiltered and I also do at least 50% w/c's weekly. Keeps 'em healthy.
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