Neat DIY. Are you sure the mesh part of that is stainless? Also, what officially are your anode and cathode materials? The only reason I ask is that you might be releasing something unexpected into the water in the process. From digging around the twinstar DIY's over the years it seems stainless steel mesh and a titanium mesh are the go to materials for the anode and cathode. Being that the 'tea ball' is an off the shelf item for other purposes, I'd be worried that you're using two metals that would oxidize fairly quickly (based on the assumption that the frame of the item that you see reacting in your video is aluminum to make this a cheap production item for the manufacturer.) If that is the case, just keep in mind aluminum and steel react very quickly. In structural architecture and overall manufacturing it's something that you generally avoid using stainless steel hardware to connect aluminum in a humid or an environment where the material will meet water. Overtime the water acts as an electrolyte and causes an ion exchange between aluminum to the steel (creating corrosion on the steel and reduced strength on the aluminum.) Since this isn't structural, I wouldn't worry about the degradation of the aluminum, but more so the chemical bi-products of electrolysis. I'm not sure if all electrolysis byproducts are identical, so this could just be an off the wall concern, but I figured I'd at least mention it. I'll dig around too just to find out for my own curiosity.DIY Twinstar! Apparently it's just a electrolysis...so, all ya need is a tea-ball and an old phone charger. Voila!