DI cartridge installation. Help.

Ronald5720

I bought a DI cartridge. Should it be installed before or after the membrane in the osmosis system? Thank you.

Christopher1252

And what is this?

Courtney4094

after.

Christina9947

Ion exchange cartridge. Additional canister with resin. Sorry for the inaccuracy. It seems I've figured it out... It should be installed after the membrane.

Sara4035

What is the point of ion exchange AFTER the membranes? What will it exchange there? After the membranes, there is 99% pure water. Moreover, it should only be installed BEFORE the membranes if there is a bypass after the filters BEFORE the membranes for household needs. If not, then installing it is pointless, as the process will be as follows: 1. We replace calcium and magnesium ions with sodium ions (the replacement is not 100%). 2. The membrane removes both from the water. What is the point of this?

Ricky9405

Of course, after the membrane. Right before the aquarium. I have a tee at home: for drinking, the water goes without resins, and for the aquarium - with resins.

Sarah5423

You are wrong. After the membrane, the water is still not suitable for the reef: For example, before the membrane, the TDS meter shows 270, after the membrane - 20, after the resins - 0. The membrane allows through much more than 1% - nitrates, silicates...

Eric5208

The principle of ion exchange resins is the replacement of one ion with another, which is why they are called ion exchange. Therefore, the number of ions in the water BEFORE the cartridge and AFTER should be the same. A TDS meter measures the conductivity of water, which varies depending on the salt composition (with the same amount of salts) because different ions conduct electricity differently. So it simply does not measure the salts that are present.

Patricia

The ion exchange resin is not based on sodium, but only on hydrogen, and it removes many substances (mainly silicates) that the osmotic membrane allows to pass through at 90%.

Yolanda

These are industrial resins. Household ones are all natural, they are restored with table salt. I agree about the silicates, but that's only important for sailors. ............ Although who knows, maybe you already have such cartridges.

Rebecca

Exactly!!!! We don't use industrial resins. Silicates are critically important for us. In fact, if we don't change the resins on time, it immediately affects the aquarium. We actually use a mixture of cationic and anionic resins. I don't know about industrial or non-industrial... They are all industrial and sold in bags.

Charles894

Thank you for the info!!! We'll know now.

John3187

Yes, indeed, the water in the tank is shared for both the aquarium and drinking, so I installed the mineralizer directly before the drinking water tap (although this may not be entirely correct). A tee (or rather, two tees) should be placed between the tank and the membrane (and in general, the post-filter should be removed if there is one): the first path goes through the mineralizer for drinking, and the second path goes through the resins for the aquarium.

Michelle9986

Cartridges 2 pcs. with resin should be installed before the accumulation tank (it fills slowly); if installed after the tank, the water under high pressure from the tank does not have enough time to be properly cleaned.

Elizabeth1221

I have a faucet in front of the resin cartridges, which I use to reduce the water flow to a very thin stream. The observation is correct - the water should pass through the resins slowly, very slowly.

Caleb6320

Stas, you did the right thing by installing the mineralizer for drinking water; it is necessary for drinking, but unnecessary for the sea.

Elizabeth1221

The simplest way (which I use) is to cut the hose that goes from the storage tank (red), install a tee, and connect the cartridge inlet. For the outlet, connect a tube of the desired length, and install a ball valve to regulate the flow if water is coming from the storage tank. If the water runs out, you fully open the valve and it drips directly from the membrane. If you don't want to use the water in the tank, you close the tap on the tank and open the valve on the cartridge.

Ryan7682

As I imagined the setup, the DI comes right after the membrane, then into the tank. That is, slowly. Not under high pressure. The only downside is that for drinking, water will pass through the DI in any case... But I don't think that's critical. I collect 2-3 liters a day for my kettle for my needs. I don't think it will significantly damage the DI.

Alan273

I don't think this water is good for you, I might be wrong, but it's the same distilled water, empty.... And besides tea, you probably also cook with it.... Install an osmosis system and don't use a mineralizer..... Why not do it like Stas, for example? We have it set up like that somewhere.

Rebecca1419

So, I expressed myself a bit incorrectly... For the aquarium, water will go through 5 stages - 3 filters, a membrane, and DI, while for drinking and personal use it will go like this - 3 filters, a membrane, DI, remineralizer, UV.

Mariah

Now it's better!

Jeffery7866

After DI, Rintek had strong stomach cramps!!!!!!! I don't think others are fundamentally different. So, BE CAREFUL!!!!

Diana8604

If that's the case... then why take the risk? For a specialist, it's 5 minutes of work.

Joseph1346

Here I am, Tanya, about the same...

Pamela

Stomach cramps! What is this from? From pure water?

Stefanie9771

+1. This is all about water purification...

Tracy

I think it all comes down to pH. (It's too lazy to unscrew the electrode from the KR, to measure pH after DI...)

Aaron580

I'll connect it tomorrow - I'll definitely measure it!!!

Dawn6148

And be sure to compare it with the pH of tap water...

Sherri1320

Okay, what about the cartridges if the water is collected not in the storage tank, but in a storage container of 200 liters?

Steven7574

After DI PH is approximately 5.6. And how should one "be" with them?

Timothy

Well, if the question is about low flow rate, then after a normal pump, it can't be called low.

Chad9037

Thank you! I don't think such water is very beneficial...

Nicholas

Which pump is being referred to? If it's the one used in osmosis systems, then this pump provides the correct pressure, and what does "not weak pressure" mean, since the membrane physically cannot provide pressure greater than its nominal value?

Frederick

The thing is that we need low flow rate only so that the resin has time to clean the water. If I'm not mistaken, the recommended height of the cartridge for the resin we use is about one meter. If we have about five of our cartridges with resin in series, the water flow rate may not be weak at all.

Angel2396

Why can't we use standard-sized cartridges according to the scheme provided by Vadim? After the membrane, there won't be a high flow rate anyway. Whether the resins clean the water or not can be checked with a regular TDS meter.

Mark7376

Why not? Of course, you can! That's how I have everything connected, just the tap for convenience is placed after the cartridge. We're talking about a storage tank when the water flows quite quickly. In this case, the tap has to be used to regulate the speed, as the water doesn't get cleaned enough, especially if the resin is not completely clean.

Courtney

Is it like that for you?

John828

Yes, that's right. Everything works perfectly.

Denise

Thank you all! I connected everything. It's actually quite simple. I connected everything according to Vadim's scheme, just added a tap like E.K.'s afterwards.

Wendy2244

Well water pH - 7.5 Water after 6-stage osmosis (mineralizer, UV) pH - 6.5 After DI pH - 6.5

Andrew4194

People, please clarify, can water be used for drinking after DI?

Paul

This question is a whole topic for a "mega-argument," as some will claim that distillate can be consumed while obtaining minerals from other products, while others will argue that it is harmful, as distillate should be passed through a mineralizer before drinking (U.S. military standards require the use of a mineralizer when obtaining water for drinking and cooking).