Finally a dark enough blue with pigment less Pu 230. Should be ready to demould in 2.5 hours. Got 10kgs of Pu without pigment thanks to veeyor and Ola uncle.
This was 150 Pu + 50 hardener plus 2 g of blue. I need almost 240 ml for the entire set. Put the set on top of my cooler for 15 minutes hoping the vibrations would release any bubbles. (thanks for the suggestion v) .