ICP Review and High Si in RODI

[purple_jeep]

Hi All,

ICP: Link

Only my second ICP so I was wondering if someone could put a second pair of eyes on it and see if there is anything I should try to correct for?

Phosphates seem higher than my Hanna Checker so I'll look into that, I use Tropic Marin pro Reef salt and dose All for Reef, tank is about 18 months old. I have a grump RBA so that and just curiosity is why I did an ICP.

I am also confused by the high silicon in my RODI as I changed the DI and all the filters (not the membrane) about a month or so ago... Ill have to test my city water. Not sure it maters but I do use a water softener with Potassium instead of Sodium salt.

Cheers

Chris

 

[taricha]

What's the value of the Si in your rodi water? What I see in the icp report on tank water is fine for Si.
Aluminum at ~50ppb isn't great. Probably not hurting anything, but I'd think about what might be adding a bunch of Al.

 

[Randy Holmes-Farley]

Si is never any concern if you do not have problematic levels of diatoms.

I’d raise the salinity to 35 ppt, bring up calcium and potassium that way, and I’d consider trying a trace element supplement to see if it is helpful.

 

[purple_jeep]

Si is 2107 ug/L (if you click the osmosis tab in the link it shows the RODI)

I had a problem with diatoms recently that drove me to replace the Di and filters as I think I ran the DI a little too long. The Diatoms cleared up and I really don't want them to come back....

So a trace element supplement on top of the All for Reef or should I just bump up the all for reef dose?

 

[purple_jeep]

Btw thank you both for replying

 

[KStatefan]

Si is 2107 ug/L (if you click the osmosis tab in the link it shows the RODI)

I had a problem with diatoms recently that drove me to replace the Di and filters as I think I ran the DI a little too long. The Diatoms cleared up and I really don't want them to come back....

So a trace element supplement on top of the All for Reef or should I just bump up the all for reef dose?

Is that 2107 after you replaced the resin? Maybe you need a better DI.

 

[purple_jeep]

I am using Coralvue resin I'll probably switch to BRS see if it makes a difference...

 

[jda]

There are RO membranes that reject more Si than others and can save you on resin.