Did you find any? I'm about to start making them out of sterling silver, if that's still in your price range. Silver purifies water. And your fish would essentially be swimming in colloidal silver. I would think it wouldn't harm your fish? I'm going to research this now.. haha, anyway, if youre still interested, Email me at TJ_1123LLC@outlook.com
I enjoyed your video. Would like to share some pics. I Hans made a free stacked brick wood fired forced air furnace. I melt in a 2 gallon cast iron put and have used 11-16 mm and the 36 mm ones as well. Will be melting copper this summer as well
