Hi
I purchase 25 litres RO about every 3-5 months for a shrimp tank.
The first time I purchased RO the TDS was 14. The second time I went to the shop and come home the TDS was 40! I just accepted the extra 40 TDS.
Anyway the same pattern seemed to happen another two times, however yesterday it measured at 120 TDS.
I'm pretty sure my TDS meter is fine, before going to the shop I used the last of the RO and it read 40TDS which it was when purchased about 5 months ago.
I feel like i've wasted my money, and was just wondering what everyones experiences here are? Do you test the TDS of the RO at the shop in front of them? or is the shop I've chosen unreliable lol.
Would just like some opinions as I can't see how 120 TDS is acceptable, the time I remineralise the RO it will be nearly the same as my tap TDS and I have no idea what there 120TDS consists of.
The only other option is maybe algae or something started to grow in the container where it was nearly empty for so long. I didn't rinse it out, I never do and never had problems before. I also store the container in the shed wrapped in lots of black bin bags to keep light away.
Cheers.
I purchase 25 litres RO about every 3-5 months for a shrimp tank.
The first time I purchased RO the TDS was 14. The second time I went to the shop and come home the TDS was 40! I just accepted the extra 40 TDS.
Anyway the same pattern seemed to happen another two times, however yesterday it measured at 120 TDS.
I'm pretty sure my TDS meter is fine, before going to the shop I used the last of the RO and it read 40TDS which it was when purchased about 5 months ago.
I feel like i've wasted my money, and was just wondering what everyones experiences here are? Do you test the TDS of the RO at the shop in front of them? or is the shop I've chosen unreliable lol.
Would just like some opinions as I can't see how 120 TDS is acceptable, the time I remineralise the RO it will be nearly the same as my tap TDS and I have no idea what there 120TDS consists of.
The only other option is maybe algae or something started to grow in the container where it was nearly empty for so long. I didn't rinse it out, I never do and never had problems before. I also store the container in the shed wrapped in lots of black bin bags to keep light away.
Cheers.