RO/DI question

Allmost · 06/03/2010, 08:47 AM

Hello all.,

so I got this RO/DI system about 6 months ago, about 3 months ago, the TDS started reading over 10 PPM ! so I changed the DI resin and went to zero again.

now last week I noticed the first chamber which is the sediment or the white floss I think, is turning a bit brownish, and PPM this week went up to 1 PPM , and this morning 2 PPM. and I'm about to make 200 G of water tonight lol

so what should I change ? the sediment ? buy a new one ? or wash it ?
should I change the RO and the DI as well ?

I have 3 tanks, 2 65G and 1 25G, so I make about 30G of water a week for water changes and then as much as needed for top off, is it normal for the RO/DI system to go bad this fast ? it comes with a pressure pump which is supposed to make the life of the resins longer :S any advice ? should I check the plumbing again ?

also, I notice, the water pressure comin in isnt high (26th floor) so it keep turning itself off and flashing the LED for water supply and then turns back on again ... could this be a problem ?

thank you all

James77 · 06/03/2010, 09:09 AM

Change all the fliters before the membrane- ie all the sediment and carbon blocks.

What is the TDS reading directly out of the membrane, before the DI?

Allmost · 06/03/2010, 09:30 AM

Quote:

Originally Posted by James77

Change all the fliters before the membrane- ie all the sediment and carbon blocks.

What is the TDS reading directly out of the membrane, before the DI?

its a inline TDS meter, I havent unpluged it and plug into RO to check yet, I will do that tonight and see what its reading.

thanks, will change them both tonight before making new water.

Brian-1977 · 06/03/2010, 10:24 AM

Your TDS meter may be off as well I would get a hand held one that you can calibrate manually. They are pretty cheap and work well.

06/03/2010, 08:47 AM	#1
Allmost Moved On Join Date: Apr 2010 Location: canada, toronto Posts: 8,161	RO/DI question Hello all., so I got this RO/DI system about 6 months ago, about 3 months ago, the TDS started reading over 10 PPM ! so I changed the DI resin and went to zero again. now last week I noticed the first chamber which is the sediment or the white floss I think, is turning a bit brownish, and PPM this week went up to 1 PPM , and this morning 2 PPM. and I'm about to make 200 G of water tonight lol so what should I change ? the sediment ? buy a new one ? or wash it ? should I change the RO and the DI as well ? I have 3 tanks, 2 65G and 1 25G, so I make about 30G of water a week for water changes and then as much as needed for top off, is it normal for the RO/DI system to go bad this fast ? it comes with a pressure pump which is supposed to make the life of the resins longer :S any advice ? should I check the plumbing again ? also, I notice, the water pressure comin in isnt high (26th floor) so it keep turning itself off and flashing the LED for water supply and then turns back on again ... could this be a problem ? thank you all

06/03/2010, 09:09 AM	#2
James77 Registered Member Join Date: Aug 2005 Location: Rhode Island Posts: 8,158	Change all the fliters before the membrane- ie all the sediment and carbon blocks. What is the TDS reading directly out of the membrane, before the DI? __________________ Jim Current Tank Info: 120g Mixed Reef and 75g Freshwater

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06/03/2010, 10:24 AM	#4
Brian-1977 Registered Member Join Date: May 2010 Posts: 58	Your TDS meter may be off as well I would get a hand held one that you can calibrate manually. They are pretty cheap and work well.