I once read a post in a diy dream chip thread that used water cooling copper tubes 2ft over the tank.
“Aren’t you worried about copper?”
“Aren’t you worried about copper?”
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Copper is not going to be an issue in a tank with aragonite or a skimmer. The araonite will quickly bond copper out of the system. It will also attach to organics, become benign and get skimmed out. There is a slim to no chance that copper is your issue, and Slim just walked out of the door.
Low nitrate is not an issue if bacteria is keeping it low - anoxic bacteria in the sandbed or rocks. The ecosystem will not drive it down to zero and there is always enough to keep the ecosystem fed. This is a red herring, unless you are dosing organic carbon, NoPOX, etc. in which case it can be an issue. As you can see in the ICP, you have enough Nitrate... it is just hard to test with our hobby-grade kits.
I am also with the "perfect storm" theory.
Lugols is not kind of iodine that you need to add. This is very complicated and Dr. Holmes-Farley has a few articles that are very deep on the subject, but Iodide (SeaChem sells some) is what our tank inhabitants use more freely.
Tin usually comes from the salt mix, but RC is not a tin high on salt like some others. I would change more water... this should get the tin down, strontium, mylb and potassium up. Low stron, mylb and potassium are products of two-part of kalk tanks that do not add them directly or change enough water - this is why heavy stony tanks use CaRx which will help replenish all of these with the calcium and alk. If you are worried about the salt, I can assure you that normal IO does not have a tin issue at my house.

