Packing DI Resin

[AmherstReef]

Are you supposed to pack down the DI resin in the container. I have never done it , just wondering if it makes any difference.

 

[NirvanaFan]

I always have. My DI canisters are laying on their side (attached to the unit). If they weren't packed down, the water could flow right over the DI without being forced through it.

 

[Gravesj1s]

Packing it keeps water from chaneling as well as efficient contact time,according to all the manufactures instructions that Ive read.

-Steve

 

[davesolo29]

yes.. i watched a mrsaltwatertank episode where he uses a beer bottle. fits perfect.

 

[saltyscotsman]

Hi Chris all you have to do is thump the bottom of the canister on the table when you are filling and it will good

 

[cardiffgiant]

I always have left over. Anyone else?

I'm definitely trying the beer bottle trick next time.

 

[AmherstReef]

Seem to remember the last time I bought it from BRS the amount if resin filled their container exactly

 

[Buckeye Hydro]

Nearly all reefers use "mixed bed DI resin." This means that they use a resin in which anion beads and cation beads have been mixed together.

If you don't pack the DI bed tightly, the bed will fluidize, and the beads will separate by their specific gravity (i.e., weight). The anion beads will rise to the top inside the cartridge, and the cation beads will sink to the bottom. You'll effectively have "separate bed resins" where the RO water passes through the cation beads first, and then the anion beads. Even with new resin you'll see that the DI water TDS is higher once the beads separate. Solution? Dump the resin into a clean container, remix them, add a little more resin, and repack the DI cartridge tightly.

Russ

 

[Buckeye Hydro]

I always have. My DI canisters are laying on their side (attached to the unit). If they weren't packed down, the water could flow right over the DI without being forced through it.

Recommend you pull the DI carts from their clips and orient them vertically, with bottom-up flow. If you need them, clips to hold the tubes vertically are VERY inexpensive.

Russ

 

[tmz]

I use a pice of pvc with a cap on the end to pack it down.

 

[block head]

Hmm , i have horizontal di chamber. Much smaller than standard acrylic chambers. I've always followed the old army saying " pack it in, make your buddy smile"

 

[IronMan72]

Seem to remember the last time I bought it from BRS the amount if resin filled their container exactly

The first few bags I got from them filled their container with no waste. The last two bags however ended up about 1/2" short and I had to fille that space with a piece of filter sponge to keep it packed. These last two bags also lasted significantly shorter than the first two and the TDS of the source water has actually gone done a bit.

To answer your question, you are supposed to pack the DI resin. There is a video on the BRS site about it too.