Your opinion of acceptable TDS?

dmbnpj · 10/10/2006, 06:37 PM

I know some are 000ppm crazy and others accept up to 020ppm. Any thoughts?

serpentman · 10/10/2006, 07:07 PM

Obviously 0 is ideal. Personally, my TDS has really never been better than 003ppm and I have hadn't had any problems (knock on wood). I would say <10 is probably acceptable.

phc567 · 10/10/2006, 07:13 PM

if you do a search. .004 ppm is time to start thinking about changing the filters

Bebo77 · 10/10/2006, 07:16 PM

i wait till mine reads 15 or so.. then i change out filters...

dmbnpj · 10/10/2006, 07:45 PM

you all change your resin prior to filters right

cinematek · 10/10/2006, 07:49 PM

What is TDS?

drummereef · 10/10/2006, 07:56 PM

Total dissolved solids. I shoot for 0.

Buckeye Hydro · 10/11/2006, 04:00 AM

Quote:

Originally posted by dmbnpj
you all change your resin prior to filters right

Not necessarily.

Use your pressure gauge to assure your prefilters are not clogged, and donâ€™t leave your carbon prefilter in too long relative to its chlorine capacity.

Use your tds meter to monitor the performance of your resin.

Russ @ BFS

Buckeye Hydro · 10/11/2006, 04:02 AM

Quote:

Originally posted by Bebo77
i wait till mine reads 15 or so.. then i change out filters...

Remember that high tds water out of your DI resin isn't necessarily an indication that your prefilters need to be changed. Sediment filters and carbon prefilters don't substantially affect the amount of dissolved solids in the water.

Russ @ BFS

Shiandy · 10/11/2006, 05:45 AM

About 004 or 005 is about my limit, then I change the DI resin

AZDesertRat · 10/11/2006, 08:31 AM

Once it gets over about 3 you begin releasing weakly ionized substances back in to the water stream. These include nitrates, phosphates and silicates so DO NOT let it get over about 2 or 3 or you are asking for trouble. I change my resin when I first start seeing any reading at all just to be safe.
As Russ said rising TDS is not an indication to change prefilters and carbons but it is an indication to check your RO only output if you are not already doing so which you should be. Prefilters and carbons affect suspended solids or partciulates more so than dissolved solids.

10/10/2006, 06:37 PM	#1
dmbnpj Registered Member Join Date: Mar 2005 Location: north carolina Posts: 1,914	Your opinion of acceptable TDS? I know some are 000ppm crazy and others accept up to 020ppm. Any thoughts?

10/10/2006, 07:07 PM	#2
serpentman part time superhero Join Date: Apr 2006 Location: Deep in the Heart of the Snowbelt (NE OHIO) Posts: 5,698	Obviously 0 is ideal. Personally, my TDS has really never been better than 003ppm and I have hadn't had any problems (knock on wood). I would say <10 is probably acceptable. __________________ BS in Marine Bio ('96), First SW tank in 1992. Current Tank(s) 300g SPS with 90g frag tank and 40 anemone tank - decommissioned 46g LPS/Softy Cube 300g FOWLR under construction - decommissioned

10/10/2006, 07:13 PM	#3
phc567 Registered Member Join Date: Sep 2005 Location: Da City by Da Bay Posts: 453	if you do a search. .004 ppm is time to start thinking about changing the filters __________________ Will in the Witness Protection program Current Tank Info: 300 Gal , 60 cube

10/10/2006, 07:16 PM	#4
Bebo77 Premium Nonpaying Member Join Date: Jul 2005 Location: Lost Posts: 14,377	i wait till mine reads 15 or so.. then i change out filters... __________________ Gabriel Current Tank Info: 300 Gal Envision Tank(98Lx30Wx26T) 120 Gal SoCalCreations Sump, Deltec TC2560, 2 LumenarcsMini 1 Reg on a light mover W Radiums 250& 400, Gallaxy ballasts, Red Dragon 10m3 return W/ 2 WavySeas, 2 6155 Tunze streams

10/10/2006, 07:56 PM	#7
drummereef Team RC Member Join Date: Jul 2006 Location: STL Posts: 14,754	Total dissolved solids. I shoot for 0. __________________ -Brett 180g Marineland Starfire In-Wall 278 gallon system

10/10/2006, 07:45 PM	#5
dmbnpj Registered Member Join Date: Mar 2005 Location: north carolina Posts: 1,914	you all change your resin prior to filters right

10/10/2006, 07:49 PM	#6
cinematek Registered Member Join Date: Sep 2006 Posts: 189	What is TDS?

10/11/2006, 05:45 AM	#10
Shiandy Registered Member Join Date: Aug 2006 Location: UK Posts: 367	About 004 or 005 is about my limit, then I change the DI resin

10/11/2006, 08:31 AM	#11
AZDesertRat Moved On Join Date: Jan 2002 Location: NW Phoenix Posts: 16,621	Once it gets over about 3 you begin releasing weakly ionized substances back in to the water stream. These include nitrates, phosphates and silicates so DO NOT let it get over about 2 or 3 or you are asking for trouble. I change my resin when I first start seeing any reading at all just to be safe. As Russ said rising TDS is not an indication to change prefilters and carbons but it is an indication to check your RO only output if you are not already doing so which you should be. Prefilters and carbons affect suspended solids or partciulates more so than dissolved solids.