tds reading

[harleymike]

Getting 10 ppm after ro/di system.
Is this bad, and what does this mean.
Maybe new membrane and filters.

Mike

 

[unibob]

Yes not good. You want 0 TDS ideally.

 

[Duke]

Getting 10 ppm after ro/di system.
Is this bad, and what does this mean.
Maybe new membrane and filters.

Mike

new filters for sure mike, i doubt the membrane needs replacing yet, although i really couldn't say for sure.

 

[Petercar (RIP Dec 2017)]

What do yu test that with ?  ..yu shouda  got  on the marinedepot deal of the day  On tuesday ...but if yu need all 3 new filters  i  got 5 sets  So yu can buy one set from me when it gets to my usa mailbox

 

[harleymike]

peter
thanks I will buy them off you.
appreciate it.

Used a tds meter at work. Very accurate.
Also tested phosphates at work.
Got .02 ppm on my older tank
and .17 ppm on my new tank.
I am using a gfo reactor on tank 2 and gfo in a bag in my hob filter in tank no 1
The gfo has only been in use or about a week.

MIke

 

[reefin]

Hey Mike, the water you tested? How did you collect this water? If it was taken at the startup of the RODI unit it just may be that TDS bleed. When I start mine I get a reading of 12 TDS and it takes about 3 min before it reads 0 again. Just a thought before you change everthing.

 

[Jewel]

How long have these filters been used, And ya let it run a bit.

 

[davesolo29]

also.. what are you putting the water you are testing in?
i find i get wayyyyy different readings using different cups or bottles.  Need to make sure it is something extremely clean.

 

[harleymike]

I did let it run for a bit, and put the water in sterile Lab bottles.
I knew the filters were old, but wasnt sure if 10 was acceptible.
I will get some new filters, hopefully through petercar.

thanks guys