RO/DI and TDS?

tomreefer · 10/19/2019, 04:53 PM

My source is a whopping 673 tds and recently it seems my town using more chlorine or something as it smells like bleach when I take a shower or bath. Should I be concerned?

My RO/DI I use the following scheme

Sediment 1st stage; Chloromine Block 2nd stage; 3rd stage Carbon Block; 4th Stage 75gpd Membrane; 5th stage DI.. Now my TDS before going to DI is 19; I am thinking maybe I need another DI.. 19 is high going to DI correct?

outssider · 10/19/2019, 05:14 PM

19/673= good 97% efficient. If you an actually smell the chlorine in the tap water, I'd keep a very close eye on the carbon blocks....probably change them out more often then most of us do....there are test kits you can buy from brs to check the total chlorine of your discharge water....

tomreefer · 10/19/2019, 05:17 PM

Yea I can smell it.. so which block just the carbon not chlromine block? What test kits?

BeachBumm · 10/19/2019, 06:47 PM

If they are not using chloramines to treat your water and just use chlorine you could actually run two carbon blocks and take out the chloramine block and they would probably last a little longer .

tomreefer · 10/19/2019, 07:02 PM

Quote:

Originally Posted by BeachBumm

If they are not using chloramines to treat your water and just use chlorine you could actually run two carbon blocks and take out the chloramine block and they would probably last a little longer .

Well they use chloramines for sure, I checked my towns water report

Opus123 · 10/19/2019, 08:48 PM

Quote:

Originally Posted by tomreefer

Well they use chloramines for sure, I checked my towns water report

That may not be the case currently. Most cities use either chlorine or chloramines, but not both at the same time. Some can switch back and forth between the 2 during different times of the year. The water report is just a snapshot of the water at a certain time so your water could be different now. I know a few months back our city posted to their facebook page that they were doing maintenance to the water system and were using higher than normal amounts of disinfectants and that the water would smell for a few weeks.

As stated you might want to look into getting a chlorine test kit. You could also look into getting a carbon block that is made to take out higher amounts of chlorine if you think that is an issue. Chloramines will not hurt your ro membrane but they will exhaust your di quicker. You may also want to look into getting a 99% rejection rate ro membrane such as the spectrapure. I have the spectrapure and my 450 tap is taken down to 3 or 4 before the di.

outssider · 10/21/2019, 05:57 PM

Quote:

Originally Posted by tomreefer

What test kits?

I've used these

https://www.bulkreefsupply.com/insta...s-lamotte.html

tomreefer · 10/21/2019, 06:55 PM

Quote:

Originally Posted by outssider

I've used these

https://www.bulkreefsupply.com/insta...s-lamotte.html

Do you use these test kits before using your RO? or after? BEFORE DI I WOULD IMAGINE

outssider · 10/21/2019, 08:55 PM

before ro. you can use it on your exhaust water that goes down the drain....that's the same as before ro....you can also use it on the flush water if you have a flush hooked up

BeachBumm · 10/27/2019, 07:34 AM

They do use chloramines where I live in South FL so I do use two carbon blocks after the sediment filter and my DI resin last for a pretty decent time . It doesnt exhaust very quickly and I always have 0 TDS and when not I change the DI resin but I do not have to do that too often !

moondoggy4 · 10/27/2019, 11:36 AM

Speactrpure has a help tab on their website and you can fill in the blanks and they will get back to you on their recommendations, I just did it.

10/19/2019, 04:53 PM	#1
tomreefer Registered Member Join Date: Jan 2014 Posts: 767	RO/DI and TDS? My source is a whopping 673 tds and recently it seems my town using more chlorine or something as it smells like bleach when I take a shower or bath. Should I be concerned? My RO/DI I use the following scheme Sediment 1st stage; Chloromine Block 2nd stage; 3rd stage Carbon Block; 4th Stage 75gpd Membrane; 5th stage DI.. Now my TDS before going to DI is 19; I am thinking maybe I need another DI.. 19 is high going to DI correct?

10/19/2019, 05:14 PM	#2
outssider Registered Member Join Date: Nov 2009 Location: Reseda, Ca. Posts: 1,717	19/673= good 97% efficient. If you an actually smell the chlorine in the tap water, I'd keep a very close eye on the carbon blocks....probably change them out more often then most of us do....there are test kits you can buy from brs to check the total chlorine of your discharge water.... __________________ Please don't feed the bears because the bears will become dependent on free handouts and forget how to take care of themselves …... Current Tank Info: 75 Gal. Mixed reef mostly sps

10/21/2019, 08:55 PM	#9
outssider Registered Member Join Date: Nov 2009 Location: Reseda, Ca. Posts: 1,717	before ro. you can use it on your exhaust water that goes down the drain....that's the same as before ro....you can also use it on the flush water if you have a flush hooked up __________________ Please don't feed the bears because the bears will become dependent on free handouts and forget how to take care of themselves …... Current Tank Info: 75 Gal. Mixed reef mostly sps

10/19/2019, 05:17 PM	#3
tomreefer Registered Member Join Date: Jan 2014 Posts: 767	Yea I can smell it.. so which block just the carbon not chlromine block? What test kits?

10/19/2019, 06:47 PM	#4
BeachBumm Registered Bumm Join Date: Apr 2009 Location: South Florida Posts: 176	If they are not using chloramines to treat your water and just use chlorine you could actually run two carbon blocks and take out the chloramine block and they would probably last a little longer .

10/27/2019, 07:34 AM	#10
BeachBumm Registered Bumm Join Date: Apr 2009 Location: South Florida Posts: 176	They do use chloramines where I live in South FL so I do use two carbon blocks after the sediment filter and my DI resin last for a pretty decent time . It doesnt exhaust very quickly and I always have 0 TDS and when not I change the DI resin but I do not have to do that too often !

10/27/2019, 11:36 AM	#11
moondoggy4 Registered Member Join Date: Jan 2007 Location: menifee So cal Posts: 11,042	Speactrpure has a help tab on their website and you can fill in the blanks and they will get back to you on their recommendations, I just did it.