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Old 07-19-2013, 11:29 PM   #1
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do i make a water change or not....

I have a 55 gallon reef tank 6 months old. Every Sunday I make a 5 gallon water change but for the last 3 weeks I test the water on Saturday and get 8.4 ph, 0 nitrites,0 nitrates, 0 phosphates...I really think I need to change my water changes to 5 gallons every 2 weeks do you agree????
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Old 07-20-2013, 02:15 AM   #2
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Should be okay but if you have a reef tank other elements may get used up faster than you realize, calcium, magnesium, etc
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Old 07-20-2013, 02:25 AM   #3
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I test for calcium,mg. and alkalinity too I can keep them in range with supplements if needed...calcium is at 480 and mg. 1400, alkalinity 10dkh...thanks.
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Old 07-20-2013, 03:03 AM   #4
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Sorry but I just have to ask is there any ammonia and on the nitrate test are you shaking bottle number 2 for 30+ seconds and then the vial for 60 seconds and letting it sit for another 60 seconds?
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Old 07-20-2013, 03:06 AM   #5
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Quote:
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I test for calcium,mg. and alkalinity too I can keep them in range with supplements if needed...calcium is at 480 and mg. 1400, alkalinity 10dkh...thanks.
All readings are perfect. Would you share your secret?
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Old 07-20-2013, 05:34 AM   #6
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It is the trace elements that get depleted, thats why you do a water change, if you change your oil at 3000 miles but you look at it and think it looks clean, do you not change it, the protective elements of oil break down due to heat, the same as your trace elements break down, also note API test kits are notorious unreliable.
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Old 07-20-2013, 07:45 AM   #7
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ph will fluctuate daily, what do you have in the tank that will determine if you need water changes. if you have lots of sp they need the trace as it uses it up fairly quickly, lps and softies not so much
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Old 07-20-2013, 12:01 PM   #8
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The question is does he have anything in his tank at all?
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Old 07-20-2013, 01:10 PM   #9
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It is the trace elements that get depleted, thats why you do a water change, if you change your oil at 3000 miles but you look at it and think it looks clean, do you not change it, the protective elements of oil break down due to heat, the same as your trace elements break down, also note API test kits are notorious unreliable.
Strange comparison lol. Ps if you change every 3000 your wasting money, unless you're racing your car off road through dirt storms with the engine red lined... ah but thats WAY off topic.
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Old 07-20-2013, 02:14 PM   #10
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Strange comparison lol. Ps if you change every 3000 your wasting money, unless you're racing your car off road through dirt storms with the engine red lined... ah but thats WAY off topic.
Not really cause most oils only last barley more than 3000miles. Unless you go fully synthetic and get an extended life oil and filter.
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