High Level Of Zinc in my RO Per ICP

Randy Holmes-Farley · May 22, 2024

WhatCouldGoWrong71 said:
I should have read this before replying to the other. Zinc is the only thing that popped on my ICP for RODI.

OK, then it is for sure post DI contamination.

Reefahholic · May 22, 2024

WhatCouldGoWrong71 said:
Nothing is exhausted. A couple weeks prior to my ICP all new sediment and DI replaced. Membranes are <6 months old. I estimate about 1500 gallons through 3 membranes, so, 500 a membrane.

Water is dripping over metal on my float valves. I’m fairly certain that if it isn’t in my tap, that is the culprit. I plan to test my tap next ICP instead of RODI. Then after that test RODI, as I am replacing the metal on the float valves.

(The week before my ICP I removed one of my membranes per Buckeye’s advice).

Buckeye Hydro (I believe Guss) gives really solid advice, definitely take their advice over at Buckeye. Sounds like a good plan. You could have an extreme amount of zinc coming in or maybe it is coming from something that’s after the DI stages that’s dumping into your FW reservoir. Either way, don’t let it get up to 60+ ug/L. You need to find the source asap. Zinc will nuke a system, I’ve seen it many times.

Which float values are you using? Can you link the exact product below:

WhatCouldGoWrong71 · May 22, 2024

Reefahholic said:
Buckeye Hydro (I believe Guss) gives really solid advice, definitely take their advice over at Buckeye. Sounds like a good plan. You could have an extreme amount of zinc coming in or maybe it is coming from something that’s after the DI stages that’s dumping into your FW reservoir. Either way, don’t let it get up to 60+ ug/L. You need to find the source asap. Zinc will nuke a system, I’ve seen it many times.

Which float values are you using? Can you link the exact product below:

Yeah, he spent a couple hours with me redoing my system virtually. He has my system in really good shape. I need to add one more booster pump soon. @Reefahholic scroll to page one: Here it is

High Level Of Zinc in my RO Per ICP

1) Should I be worried at 12.8 of Zinc per my ICP? 2) The only thing that could be leaching Zinc in my water is my RODI booster pump, or something in the lines of the water in my house 3) Should I add a canister to my system to strip this, and what is the best item to put in that canister? 4)...

www.reef2reef.com

Randy Holmes-Farley · May 22, 2024

That’s all fine, but there’s no chance anything upstream of the ro/di is the source of the zinc if zinc is the only ion of significance in the icp of the ro/di water.

It absolutely must be from post di contamination. If it were from upstream, there would be lots of other ions as well.

Reefahholic · May 22, 2024

This is what I’m currently running. Nothing coming through the filters. Corals growing.

I wish I had a second membrane, and one additional carbon stage.

I recently reached out to my city to see if they treat the water with Chlorine or Chloramine, but haven’t heard back. I tested for Chlorine and it was negative.

I use a BRS float valve at my FW reservoir.