'Floating' Kalkwasser lid

[noj3333]

I'm dosing kalkwasser through my ATO. Currently I have a 10 gallon brute can that I use to hold my ATO water (I have several fail safe measures so I feel confident that the size won't be an issue).

I have a slight worry that the kalk may lose some potency, my brute can lasts about 10 days between fill ups. I was wondering if I could use a "˜floating lid' in addition to the brute can lid. I was going to cut a circle of that plastic bubble wrap that company's use when they ship delicate items. My goal is to have the plastic sheet move down as the water is used, thus reducing the surface area of the exposed kalkwasser.

Good idea? Bad idea? Chemical leaching issues? Other issues?

 

[dcforester1]

I always thought that it would form a skin over the top to stop air from effecting it. I a sure others will chime in

 

[RocketEngineer]

Too complicated. A simple lid is fine.

Degradation of Limewater in Air by Randy Holmes-Farley

 

[noj3333]

Rocketngineer, thanks's for the link... if Randy used a HUGE trash can then I'm sure my 10 gallon trash can is fine. Appreciate the reply's.