Are Soumi Knight Systems RO/DI any good?

[ignath]

has anyone had experience with this company or its products? They are on ---- and I wondered if this was a good product. Any help will be appreciated.

 

[acrylic51]

What are the specs on the unit??? GPD? 3,4,5 stage, what's included with the unit.....

 

[stimpy4242]

its a five stage unit and it is 100gpd!!! I have one and it works great!

 

[acrylic51]

Wouldn't touch a 100gpd unit......The rejection rate on the membranes is poor compared to a 75gpd unit........What brand membrane are they using in the unit? I'd go fo a 75gpd unit.....If you can ask seller what the rejection rate of the membrane is between the 100gpd and 75gpd.....If he can't tell you I wouldn't buy anything from him....

 

[stimpy4242]

While I am not sure what the technical terms are just yet, i do know the TDS is 0. All other tests we have are also good. What I have noticed is the first filter browns up pretty quickly...but it has been good.

 

[acrylic51]

Yeah the first filter does gunk up quickly.......100gpd membranes have about a 92-93% rejection rate where a 75gpd membrane has 98-99% rejection rate.

 

[stimpy4242]

i mean all i can say is what I get out as the final product...and I lied its a six stage unit...haha...with the di part...

 

[stimpy4242]

Wow, so I asked like you suggested and here was his response...
Ion
% Rejection*
Calcium
93-99
Sodium
92-98
Magnesium
93-98
Potassium
92-96
Manganese
96-98
Iron
96-98
Aluminum
96-98
Copper
96-99
Nickel
96-99
Cadmium
93-97
Silver
93-96
Zinc
96-98
Mercury
94-97
Hardness Ca&Mg
93-97
Radioactivity
93-97
Chloride
92-98
Ammonium
80-90
Ion
% Rejection*
Bromide
90-95
Phosphate
95-98
Cyanide
90-97
Sulfate
96-99
Thiosulfate
96-98
Silicate
92-95
Silica
90-98
Nitrate
90-95
Boron
50-70
Borate
30-50
Fluoride
92-95
Polyphosphate
96-98
Orthophosphate
96-98
Chromate
85-95
Bacteria
99+
Lead
95-98
Arsenic
50-90
That seems pretty thorough for a response...said the membrane rejection tabel was the same for both 75 and 100gpd units.

 

[acrylic51]

They aren't.....Call Walter at AirWaterIce.....there is a rejection rate difference between 75gpd and 100gpd membranes.....As well call CustomAquatics or check their site or Jay at Premium Aquatics as well.....He just gave you an idea of what it removes.....Not impressive info at all IMO.

 

[stimpy4242]

NO arguments started, you could just be biased and it is possible there is a membrane with the same rejection rate....i know i know if it was the same it would produce the same amount...i understand the thought process. Bottom line for me is TDS is 0 and all my tests are clear...i even add the rodi remix to it to put some essentials back in. Did you check the other thread yet?

 

[acrylic51]

No argument, but I know there is a difference and as long as your getting 0TDS that's the important......

 

[stimpy4242]

Ok he provided the website for information about the actual membranes and the manufacturer concurs...
http://www.appliedmembranes.com/tfe.htm

 

[stimpy4242]

Oh and please respond to this forum as well:
https://forums.saltwaterfish.com/t/250228/closed-loop-design
thanks ;-)