Silicon on ICP

[jhadaway]

I've been fighting the worst hair algae I've ever had with receding frogspawn and hammers. I have lost 2 of 5 heads of my favorite torch so I bit the bullet and sent in an ICP. My nitrate and phosphates measure at 0 because of the algae so I've never gotten any answers there. I lost my dosing pump a few weeks ago and am in the process of dialing everything back in but all of my Acropora and SPS are going strong so I don't suspect the alk swings doing the damage to my lps. The tank is 2 years old and you know when it just seems off, right? Anyway, I had some minor trace elements low and my alkalinity was high but I was slowly bringing things back down. I checked my ICP today and nothing crushing really jumped out at me, then I look at my RODI and BAM, 136.0 µg/l silicon on the tank water, 2962 µg/l on the RODI. Then I realized, silicon, not silicates. Any way you slice it I'm a little freaked. Is this what has been fueling my hair algae and irritating my LPS? There are lots of people on here that excel in chemistry that I hope will chime in.
Should I order 2 more DI cartridges? Is there anything that will pull this out of water? Does silicon even do anything at all?

Thanks,
JOe

Symbol	Value	Calculated reference value	Difference	Result	Actions
Base elements
Salinity	33.11 PSU	35.00 PSU	-1.89 PSU		View
Carbonate hardness	9.57 °dKH	7.50 °dKH	+2.07 °dKH		View
Major elements
Chloride	18607 mg/l	17971 mg/l	+636.8 mg/l		View
Sodium	9630 mg/l	9984 mg/l	-353.8 mg/l		View
Magnesium	1487 mg/l	1194 mg/l	+293.8 mg/l		View
Sulfur	999.8 mg/l	835.0 mg/l	+164.8 mg/l		View
Calcium	480.5 mg/l	382.1 mg/l	+98.44 mg/l		View
Potassium	391.1 mg/l	370.3 mg/l	+20.76 mg/l		View
Bromine	67.23 mg/l	60.81 mg/l	+6.42 mg/l		View
Strontium	9.73 mg/l	7.26 mg/l	+2.47 mg/l		View
Boron	5.47 mg/l	3.99 mg/l	+1.48 mg/l		View
Fluorine	1.55 mg/l	1.18 mg/l	+0.38 mg/l		View
Minor elements
Lithium	221.4 µg/l	154.3 µg/l	+67.13 µg/l		View
Silicon	136.0 µg/l	90.76 µg/l	+45.28 µg/l		View
Iodine	16.70 µg/l	58.99 µg/l	-42.30 µg/l		View
Barium	6.21 µg/l	9.08 µg/l	-2.87 µg/l		View
Molybdenum	16.58 µg/l	10.89 µg/l	+5.68 µg/l		View
Nickel	u.	0.45 µg/l	-0.45 µg/l		View
Manganese	u.	0.91 µg/l	-0.91 µg/l		View
Arsenic	u.	1.36 µg/l	-1.36 µg/l		View
Beryllium	u.	0.09 µg/l	-0.09 µg/l		View
Chrome	u.	0.45 µg/l	-0.45 µg/l		View
Cobalt	u.	0.09 µg/l	-0.09 µg/l		View
Iron	u.	0.45 µg/l	-0.45 µg/l		View
Copper	u.	0.45 µg/l	-0.45 µg/l		View
Selenium	u.	0.45 µg/l	-0.45 µg/l		View
Silver	u.	0.09 µg/l	-0.09 µg/l		View
Vanadium	u.	1.36 µg/l	-1.36 µg/l		View
Zinc	0.32 µg/l	1.82 µg/l	-1.49 µg/l		View
Tin	u.	0.45 µg/l	-0.45 µg/l		View
Nutrients
Nitrate	0 mg/l	2.00 mg/l	-2.00 mg/l		View
Phosphorus	2.42 µg/l	13.61 µg/l	-11.19 µg/l		View
Phosphate	0.01 mg/l	0.04 mg/l	-0.03 mg/l		View
Pollutants
Aluminium	0.51 µg/l	0.09 µg/l	+0.42 µg/l		View
Antimony	u.	0.09 µg/l	-0.09 µg/l		View
Bismuth	u.	0.09 µg/l	-0.09 µg/l		View
Lead	u.	0.09 µg/l	-0.09 µg/l		View
Cadmium	u.	0.18 µg/l	-0.18 µg/l		View
Lanthanum	u.	0 µg/l	+0 µg/l		View
Thallium	u.	0.09 µg/l	-0.09 µg/l		View
Titanium	u.	0.09 µg/l	-0.09 µg/l		View
Tungsten	u.	0 µg/l	+0 µg/l		View
Mercury	u.	0 µg/l	+0 µg/l		View

 

[KrisReef]

ICP Test. Your Silicon levels are too high.

So my tank has been off for some time. It's been driving me crazy. I got my test back today and WHOA. I take it it's coming from my RODI Element Analysis Setpoint Deviation Si 2757 µg l 100 µg l 2657.00 ▲ Is there a recommended filter to...

www.reef2reef.com

Edit: Good Read, Randy Chimes in near the bottom. Hopefully it will help you out with your concerns?