ios8 - How to release memory in Spritekit game after SKScene ends -

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I am trying to create a game with 10 levels. Every time I load the page and its associated SCEN, memory usage increases, while I leave the page; View, I visual = zero, still the memory gets a little less, not completely. Level 10 consume high memory and if I run all the levels, then, due to memory pressure the app may crash. How can I leave all the storage immediately after leaving the scene?

Use this when the scene ends: 

  [manually All removal actions]; [Remove all children];

I found that it helps with strange problems that may occur on visual changes and memory problems.


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