swapping ceramic cap for electrolytic polarity issue

[lucas abela]

building this

http://tagboardeffects.blogspot.com/2014/04/grind-customs-fx-tenebrion-reverb.html

asks for a 1u ceramic cap

i only have 1u electrolytic cap

my problem is i don't know how to place it polarity wise within this circuit

any tips

[nocentelli]

Negative to output.