May 9, 2008 · TDS of 4 is not bad but thats when I usually plan on changing the DI resin. Like mentioned above the storage tank could have 'collected' dust and other items that raised the …

Feb 3, 2016 · Once you change your filters, disconnect the tube that goes from the membrane where it goes intot the di resin. Let it run a few minutes and check with tds meter. Let's say …

Feb 12, 2010 · All i want is accuracy and reliability. With so many cheap TDS meters being offered on EBay its hard to make a choice, but i definetly need to buy something to monitor my …

Aug 12, 2007 · Reefs.com Discussion - Need to reclaibrate my TDS monitor on my RO/DI unit. It is a HM Digital, DMI In-line Dual TDS meter. Instruction booklet has no information, except …

Mar 9, 2004 · Reefs.com Discussion - Whats a good brand of TDS meter, I seen this one on ebay made by Orion. Is this thing good?

Sep 5, 2003 · Reefs.com Discussion - I have hooked my new 4 stage RO/DI unit. TAP = 350 RO = 35 DI = 8 Should I add another DI? Open or close the drain valve more? At dropping the …

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Jun 1, 2002 · Reefs.com Discussion - Anyone have experience with various levels of TDS in their H2O? I half filled my 180 with 50 ppm H20 and have the option of using an RO/DI to create 1 …

Oct 14, 2009 · Reefs.com Discussion - I'm selling my RODI setup. I just bought a new one and this one needs to go. It was from ebay. Made by Aqua-Safe in Canada. The TDS meter is not …

Jan 1, 2012 · Reefs.com Discussion - What is the best rodi system, i want one where i can read tds, or just have a tds meter, also whats the cream of the crop salt