I have never heard of "Monster Cropping" but I have taken cuts that far along and had 100% cloning in an aero-cloner. pH 5.5 weak nutrient solution. Aero-cloners seem to be able to clone just about anything regardless of health, just can take stupid long like 3 or 4 weeks in worst case. But if you want to try monster cropping again I would suggest picking one up. I always used to make mine over seas but here in America I have not found a box with a good lid and they leak, just buy one from amazon for $60.