Someone told me that it was safe to put "Cin-a-Bon" into any plastic tank, because "it has cinnamon-spice in it instead of real cinnamon" Well.... it "etched" the inside of my iClear 30 tank!!! Needles to say but I won't listen to this "vendor/mixologist" anymore however, in the meantime is there a source yet for replacement tank cylinders for this or am I SOL? The tank still works fine, just looks kinda wierd and I'm afraid it's not gonna last for the long haul. Thank you in advance for any advice.