High TDS Reading Any help is appreciated

Mark 75g · 05/02/2012, 11:21 AM

I have a spectra pure 150gpd system. The built in tds meter is reading 18ppm. I have a hand held meter that is also reading around 18 to 20 ppm. I store the water in a 45 gallon brute trash can. I decided to check the water in it and I keep getting reading of 100ppm up to 110ppm. Not sure what is going on.

Has anyone noticed this before with your system.

I have had a break out of some hair algea and bubble algea in the last couple weeks and wondering if it attributed to the high tds reading from my top of water.

TriGa22 · 05/02/2012, 11:23 AM

How old are the filters and membranes? Was there something in the trash can other than water that would be causing the tds to read so high?

sirreal63 · 05/02/2012, 11:30 AM

The tds reading in the water container is no surprise, unless it is sealed from air, it will begin to collect whatever is in the air and that will effect the tds reading. Dust, pollen, bacteria etc all will find their way into the storage container. That is nothing to worry about, as long as you are getting zero tds out of the ro/di unit, you have removed the contaminants that you need to be concerned with.

Saltwatercoral2 · 05/02/2012, 11:59 AM

This was happening to me the other day. I have a brute trashcan, and It had a sky high TDS reading in the 400, but when I checked the water straight out of the Ro.di unit it was .oo1.

drummereef · 05/02/2012, 11:59 AM

Is the 18 TDS before or after your DI stage? Regardless, the unit should be pulling 0 TDS after your DI stage if it's functioning properly and the resin isn't exhausted. 18 sounds more like what's coming off your RO.

ek9vboi · 05/02/2012, 01:21 PM

Quote:

Originally Posted by sirreal63

The tds reading in the water container is no surprise, unless it is sealed from air, it will begin to collect whatever is in the air and that will effect the tds reading. Dust, pollen, bacteria etc all will find their way into the storage container. That is nothing to worry about, as long as you are getting zero tds out of the ro/di unit, you have removed the contaminants that you need to be concerned with.

Good info, I'll have to go back and make sure to seal my container. I get 0 TDS out of the DI but from the container I'm pulling 1-2 on the TDS.

Mark 75g · 05/02/2012, 04:21 PM

The 18 is coming out of the di. I have new filters on the way. I checked couple weeks ago and I was at 3. My corals started to look less colorful and not as much pe. Not sure if the 18 tds can cause this to sps but then I saw the 100 in the storage. Also i have an outbreak of bubble algae in last couple weeks
Thanks for the help.

sirreal63 · 05/02/2012, 04:23 PM

It could be an issue, it depends on what that 18 tds is comprised of.

05/02/2012, 11:21 AM	#1
Mark 75g Registered Member Join Date: Jul 2009 Location: Pittsburgh Posts: 510	High TDS Reading Any help is appreciated I have a spectra pure 150gpd system. The built in tds meter is reading 18ppm. I have a hand held meter that is also reading around 18 to 20 ppm. I store the water in a 45 gallon brute trash can. I decided to check the water in it and I keep getting reading of 100ppm up to 110ppm. Not sure what is going on. Has anyone noticed this before with your system. I have had a break out of some hair algea and bubble algea in the last couple weeks and wondering if it attributed to the high tds reading from my top of water. __________________ Current Tank Info: 175g Bow Front SPS,LPS,Soft with 30g frag tank

05/02/2012, 11:23 AM	#2
TriGa22 Registered Member Join Date: Mar 2007 Posts: 257	How old are the filters and membranes? Was there something in the trash can other than water that would be causing the tds to read so high? __________________ 75 Gallon FO with Instant Reef Decoration 10 Gallon Custom MINI Reef with 70 watt MH Current Tank Info: 29 gallon reef 8 Gallon Biocube

05/02/2012, 11:30 AM	#3
sirreal63 Go Spurs Go!!! Join Date: Dec 2004 Location: Meadowlakes Texas Posts: 13,357	The tds reading in the water container is no surprise, unless it is sealed from air, it will begin to collect whatever is in the air and that will effect the tds reading. Dust, pollen, bacteria etc all will find their way into the storage container. That is nothing to worry about, as long as you are getting zero tds out of the ro/di unit, you have removed the contaminants that you need to be concerned with. __________________ Jack No One has ever been seriously injured by using the search function. Alcohol, Tobacco and Firearms should be a convenience store, not a government agency. Current Tank Info: Reefing the Pentagon.

05/02/2012, 11:59 AM	#5
drummereef Team RC Member Join Date: Jul 2006 Location: STL Posts: 14,754	Is the 18 TDS before or after your DI stage? Regardless, the unit should be pulling 0 TDS after your DI stage if it's functioning properly and the resin isn't exhausted. 18 sounds more like what's coming off your RO. __________________ -Brett 180g Marineland Starfire In-Wall 278 gallon system

05/02/2012, 04:21 PM	#7
Mark 75g Registered Member Join Date: Jul 2009 Location: Pittsburgh Posts: 510	The 18 is coming out of the di. I have new filters on the way. I checked couple weeks ago and I was at 3. My corals started to look less colorful and not as much pe. Not sure if the 18 tds can cause this to sps but then I saw the 100 in the storage. Also i have an outbreak of bubble algae in last couple weeks Thanks for the help. __________________ Current Tank Info: 175g Bow Front SPS,LPS,Soft with 30g frag tank

05/02/2012, 11:59 AM	#4
Saltwatercoral2 Registered Member Join Date: Mar 2010 Posts: 1,617	This was happening to me the other day. I have a brute trashcan, and It had a sky high TDS reading in the 400, but when I checked the water straight out of the Ro.di unit it was .oo1.

05/02/2012, 04:23 PM	#8
sirreal63 Go Spurs Go!!! Join Date: Dec 2004 Location: Meadowlakes Texas Posts: 13,357	It could be an issue, it depends on what that 18 tds is comprised of. __________________ Jack No One has ever been seriously injured by using the search function. Alcohol, Tobacco and Firearms should be a convenience store, not a government agency. Current Tank Info: Reefing the Pentagon.