New to RO/DI Filtration

[jinar]

http://atlantareefclub.org/boards/data/uploads/attachments/685167=32410-3.txt" target="_blank">3.txt</a>

so i got this RO/DI filtration unit, used. But I was unable to find the intallation instruction online for the exact same thing. So i used the ones available for a similar unit from the same manufacturer Aqua Safe Systems. I think we installed correctly.

But what is it suppose to read? and what should be the safe reading for a reef tank?

Edit: ok i realized the pic didnt come up. how do i edit this?

Edit: oh! u just learned how to edit! lol

Edit:

Edit: umm ok i know how to edit now... but cant get to upload the pic
i put it up in abit

Edit: ok here it is

[IMG]http://atlantareefclub.org/boards/data/uploads/attachments/685167=32411-download.jpg>

class="gc-images" title="download.jpg[/IMG] style="max-width:400px" /></a>

 

[smallblock]

I get 4 tds beforemy di, and zero coming out of the di. It should be set up like 3 sediment filters, then the ro membrane and then last the di, the waste water should be coming out before the di unit.

 

[jinar]

Ummm it has the three canisters and one culinary on top like the pic

 

[smallblock]

thats a 4 stage ro unit no di there, you can add one on for pretty cheap though

 

[jinar]

Ok so as of right now I'm installing it... What should the readings be?

Edit: Anyone knows what the little yellow pipe I'd for?

 

[smallblock]

I would expect something like 4 tds, thats what I get coming out of my RO, the di is what gets it down to zero for me, I've talked to other memebers with similar results.

Edit: Mine runs on about 40 psi. You should check that as well. Also if you can check the tds at the tap.

 

[jinar]

Its reading 2 in and 29 after is that normal?

Edit: Ppm

 

[smallblock]

yellow pipe is where the waste water come out I belive not sure though, could be where the clean water comes out. One of those two lines is waste water and the other is the filtered water.

Edit: the line from the tap should be going to the canisters, it should go through all the canisters and the the ro membrane last

Edit: also let it run for about an hour to flush things out. See if that helps it, I think the yellow is the waste and the valve is for back flushing the unit.

 

[jinar]

Ok. Thanks for the info. We switched things around and now the readings are 1ppm and 2ppm. Not sure if those readings make sense. What about the flush valve what is that suppose to be for?

 

[oil_fan]

That looks similar to the one I have and I do have a DI on mine. Well similar as in my canisters are clear and I don't have any fancy TDS meter on mine.

But I have 1 sediment filter, 1 carbon block filter and of course the membrane. Followed by the DI unit.

 

[smallblock]

you can sort of backflush the unit, its debatable as to whether it works or not.

Edit: yeah those readings are good, I measure in tds, total dissolved solids. Not sure how the two compare. I think you will be ok. You really want zero but thats unobtainable without a di unit. Check out bulk reef supply and price a di unit.

 

[jinar]

The tap water was reading about 29 ppm. I am sorry I have absolutely no experience with filters, don't kno what parts are what... Trying to make sense out of OT right now. Any info is appreciated thanks again

 

[smallblock]

29 is great if it compares to tds, mine at the tap is around 200 tds. Again I'm not sure how tds compares to ppm.

Edit: the ro membrane is the white canister on top, the other three are sediment filters, one is a sediment one is probably a carbon block.

 

[oil_fan]

They're pretty easy to tell apart.

If you open each of the 3 main canisters, look at each cartridge. Carbon blocks usually have a wire mesh and look blackish behind that wire mesh. Sediment filters look like a white paper all rolled up. And a DI filter, if that is what that last one is, looks like it full of little beads inside the thing.

 

[smallblock]

I really dont think there is a di in there, I think its 2 carbon blocks and a sediment. The di wouldnt be plumbed inline with the sediment and carbon block. Di is always plumbed in after a RO membrane.

 

[oil_fan]

Smallblock;685209 wrote: I really dont think there is a di in there, I think its 2 carbon blocks and a sediment. The di wouldnt be plumbed inline with the sediment and carbon block. Di is always plumbed in after a RO membrane.

True. My system does have the DI and it is after the membrane.

On his though, I can't tell from the picture exactly how the lines run from what cartridge to what one next.

 

[smallblock]

I think the 3 on the bottom are plumbed in line then it goes to the ro.

 

[jinar]

So I'm getting what we think is the good water at a very slow drip and what we think is the bad water a little faster... Is that normal?

 

[smallblock]

yes,should be a 4 bad to 1 good ratio

 

[oil_fan]

Yep...normal.

What cartridge does the good water line come from? Is it the RO membrane on top?