Di resin question.

[MichaelB]

I was getting 2tds from the rodi unit so I replaced all the filters in the whole rodi unit except the ro membrane.

(Main concern was keeping water pristine for my main 40gallon sps tank. The other tanksnI probably would have waited a little longer before changing filters.)

2 new carbon blocks, 1 new sediment filter, 1 new refillable cap di resin cartridge I packed with brs color changing resin & 1 new di resin cartridge that came prepacked with the other filters.


***My question is based on the picture below are these di resin cartridges I replaced refillable as in something I should hold on to for a future refill or toss them?

The new one I packed said refillable on the package these two I have no idea about?

I also assume these di resin cartridges may have had some life left in them but heck figured I would just change them being I was changing all the other ones.

 

[Patio]

Yes, they are reusable.

 

[H2OPlayar]

When you see half the color changed, you get half the contact time with good resin. That is the reason I double up my resin that depletes the fastest, so I am always backed up by a full cartridge of good resin.

 

[Darkxerox]

When you see half the color changed, you get half the contact time with good resin. That is the reason I double up my resin that depletes the fastest, so I am always backed up by a full cartridge of good resin.

This is good advice. If it's mixed bed you also don't know if you've used up half of the cation or anion completely.

 

[Patio]

contact time

Good call out!