Kalk and Turbo calcium left over

I finally found cheap kalk and calcium but it was in 40kg bags. So obviously with only a 55g tank i have lots left over. Pm me if you are interested in any of either. I dont want it to go to waste. I would keep it all for myself but this will last years and i know the calcium forsure picks up air born mosture and becomes useless and i dont want this happening. So pm me if interested in either. Thanks.
Izzie