Can anyone back the truth to this?

Nope.

Check out http://steephilllab.com/ for lab test results on various strains of cannabis.

If it's grown properly it will have a full profile. There are just too many variabilities / growers / strains for a broad statement like this to be true.

Sure maybe some strains lack this chemical, or some growers don't grow it good enough so it lacks certain chems, but hydroponics are just a way of providing plants what they need via a synthetic route rather than organic. As far as I can tell, and lab tests done, the plants can't tell the difference.

Thanks! This will help me quite abit in my debates amongst friends.

it has to do wiht people wanting high THC strains to create new hybrids with. It is the genetics that produce high THC and low CDB strains. I dont like them personally. I will take a balanced strain anyday.