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Hey Steven, it would nice if you sticked those.  Steve
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I made one sticky thread with links to all these individual threads. I am planning on developing many more of these types of threads for the archives, so stickying everyone would become too cluttered.
Steven Pro, yeah that is my real name.
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Steve:
Want me to add some that are not hobby related but not too much for general reading?
_____________________
Eric Borneman
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Eric Borneman (2/12/2007)
Steve: Want me to add some that are not hobby related but not too much for general reading?Yes please.
Steven Pro, yeah that is my real name.
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| Steven, In your article, you used Salifert Test kits for your measuring. Just curious, why didn't you use a PO4 meter? Also, you let it stand for 24 hours before testing. Is there something about 24 hrs? Would 48 hrs be ok? Our reef club is looking to repeat this, but using a PO4 meter in June. Thanks,
Jeff
Jeff
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President
Connecticut Area Reef Society
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| I considered buying a high quality phosphate test kit or meter, but what I really wanted was replication by other individuals and other samples of carbon. So, I chose to use Salifert as many hobbyists already own and use them. I just picked 24 hours. Forty eight will to work too, but I don't know if it will make much difference.
Steven Pro, yeah that is my real name.
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| The National Sanitation Foundation (NSF) parameters for leech tesing of filtration media call for a 72-hour extraction test. Either in-line in a filter canister or in a flask. This is broken down to 3, 24 hour extractions, and the water volume used must equal 2000 mL total for all 3 extractions. The steps taken for a flask test are to first rinse the media per manufacturers instructions, place it in the flask with about 700 mL of water and let sit for 24 hours. After 24 hours decant the water and set aside, re-rinse the media per instructions and then add a fresh 700 mL of water and let sit again for another 24-hours. Repeat a third time to get the 2000 mL and test the total volume, 2000-mL for phosphate. If you are looking for phopshate leeching from a RO/DI unit then using RO/DI water for the extraction test is fine, but also a lot of people use carbon in canister filters so using a saltwater mix for the extraction would also be useful. You could also measure the phosphates from each 24 extraction seperately as this would show if the phosphate levels are decreasing over time (use) which they are supposed to do.
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