RO/DI Unit ?

[SCETT316]

I have an Aqua FX 4 stage unit, I just replaced all the cartridges, & membrane. I have a Hanna TDS unit. After running the wtr for more that 15 min. my tap water reads 355. When testing my DI water I get a reading of 005. My RO reading is 030. I thought my DI should be 000. The mfg. told me that 10% of my tap wtr. is acceptable.
Any ideas/opinions are highly appreciated. My DI tested 009 & my RO 018 before replacing all the cartridges.
Thx

[Reefland]

It is not always possible to get a TDS of 0. I think Poseidon pre-filter test is very high, like 500 and afterwards is 30; not optimum but much better than from the tap. If your getting totally filtered water with a TDS of 5 then your good to go.

[SCETT316]

It is not always possible to get a TDS of 0. I think Poseidon pre-filter test is very high, like 500 and afterwards is 30; not optimum but much better than from the tap. If your getting totally filtered water with a TDS of 5 then your good to go.

Thx Scott:
I can sleep better now.

[Samper]

I'm worderng at what point should I see my tds start to venture away from 0? 40 gallons so far made and still 0. The tap water here reads 081 ppm and I'm keeping my fingers crossed that I can still get a reading like that when I get to Ar cause I think these filters will last a while.

[SCETT316]

FWIW After getting a reading of 005 on my DI wtr. I started getting fluctuating unacceptable readings. I contacted Bob from AQUA FX, they sent me out a new replacement membrane, had me add an additional washer on the DI cartridge and I have been getting a consistent reading of OOO. Their customer service is very good.