icloud library on photo stream off, ph memory depleting fast, icloud memory static

[iMore Question]

I have an iPhone 6 plus running iOS 8.1.. Started using icloud library beta about two months back. At that time memory storage available in iCloud was 15.2 gb. While my phone memory has depleted from 7.8 gb available to 6.6 gb available, icloud memory remains at 15.2 gb available. In fact, while phone memory continuously keeps on depleting, icloud memory remains static. Any ideas why ?

 

[kch50428]

iCloud - Photos - Apple Support