I have been shooting Infrared for over 20 years. I was fortunate to get a converted Nikon D100 for a birthday present some 10 years ago from Life Pixel who have an excellent website explaining all the ins and outs of Digital Infrared. The filter I have is the Super Color IR Filter.
One thing Dan Wimpler of LifePixel talks about a little is making sure to put any images shot in RAW format through the camera maker's own software. In the case of a Nikon it is the 'Nikon Capture NX-D' software available free from Nikon.