Air ionizer as growth inhibitor for my water tank. Should work for a res also.

I used a LuminIce by Manitiowoc Ice

HOW THE LUMINICE WORKS. UV light acts on the oxygen, nitrogen, and water vapor in the air stream passing across the bulb to create photoplasma. Photoplasma is a gas that is fully ionized by UV light containing ions, free electrons, hydroxyl radicals, and ozone. Each of which is highly reactive with any microorganisms it encounters within the foodzone. This "active air" is continually recirculated within the foodzone inhibiting microorganism growth.

https://www.kitchenrestock.com/Manitowoc-K00452-Growth-Inhibitor-Kit_p_24592.html?gclid=CjwKCAjwvZv0BRA8EiwAD9T2VRmvcmvd9Xgr88vQ3_AfhCHVp8Ikbb0Pc6MyPApu6RBo-1Xrk-99CxoCoukQAvD_BwE