[felix]

white balance in any software I tried just doesn't have enough adjustment range if I have the blues on without filter. 

 

That's exactly what a custom camera profile with skewed white balance will give you. Here's how it works for IR: http://www.davidclapp.co.uk/blog/view/calibrating-white-balance-to-process-infrared-images-in-lightroom 

Your case is basically the same just with a massive amount of blue light instead of red.

 

However, I guess if the exposure is completely off there is a limit to what you can recover with camera calibration.