TDS readings

[Jon]

I just got my TDS pen and took some readings on my water. Water straight from the tap is reading 300 PPM and water through my rodi unit is 230 PPM. This seems high to me and is probably because I had the hoses incorrectly hooked up for the first five months. I’m thinking that I need to change what is inside the canisters to help filter the water better. Any suggestions on what to change and is one brand better than another?
Thanks

 

[Diogenes]

I'm a new reefer so take that with a grain of salt, but BRS sells replacement kits that seem to be pretty reputable.

 

[Roca]

What is your RODI? In a previous post you said it was a liquegen 75gpd 3 stage system but I'm not sure if what I see online is in fact what you have. Would you be able to post a link to it or a picture of it?

Through an RO system you should expect 1-5 TDS product depending on the quality of the RO membrane/pressure and through an RODI you can expect 0 TDS product until the DI resin is exhausted. So if you are at 230 product something is way off.

 

[Jon]

These are pictures of my actual rodi unit. The canisters look like they need to be changed out to me. I ordered new replacement canisters for everything for everything. This should fix my problem.