High Mn, Zn, Ba, and Si?

[Steelheader09]

This is my ICP for freshly mixed saltwater. I used Redsea Coral Pro. I have a BRS 7 stage RO/DI with 0 TDS. Could this stuff be getting through my RO? Is the salt more likely the cause? I'm very confused. Also is any of it harmful to fish?

 

[AutumnReefs]

I notice barium, silica, molybdenum, and zinc tend to be what the DI resin is removing in some cases when the resin is used up. I wonder if you need to calibrate your meter? I can't imagine it would be getting pass 3 color changing resins assuming you have the color changing ones.

 

[ScottR]

Did you test your RODI as well?

 

[Steelheader09]

Not yet but after this i may have to. I figured if this showed no issue then i didnt have to spend the money to test RO

 

[Steelheader09]

I notice barium, silica, molybdenum, and zinc tend to be what the DI resin is removing in some cases when the resin is used up. I wonder if you need to calibrate your meter? I can't imagine it would be getting pass 3 color changing resins assuming you have the color changing ones.

I have 3 color changing ones. The anion stage seems to be the only one that gets used. I recently replaced it and it has atleast 50% still blue

 

[Steelheader09]

I notice barium, silica, molybdenum, and zinc tend to be what the DI resin is removing in some cases when the resin is used up. I wonder if you need to calibrate your meter? I can't imagine it would be getting pass 3 color changing resins assuming you have the color changing ones.

I have 3 color changing ones. The anion stage seems to be the only one that gets used. I recently replaced it and it has atleast 50%

 

[Randy Holmes-Farley Verified Community Expert]

IMO, there's no reason to be concerned about 0 ppm TDS RO/DI.

Yes, some silicate can get through. Not enough of the others to be important.

Silicate at any level is not a concern unless you have problematic levels of diatoms.

 

[Steelheader09]

IMO, there's no reason to be concerned about 0 ppm TDS RO/DI.

Yes, some silicate can get through. Not enough of the others to be important.

Silicate at any level is not a concern unless you have problematic levels of diatoms.

Thank you! I was really worried about the manganese cause there help section offered no way to remove it. Everything else can be removed with phosban if needed they said. I was concerned that my water may be lethal to fish with whaf I thought was high levels.