in our cupboard we have 4 white rhino cuttings, i started them of with 1" rockwool cubes & transplanted them into 4" coco blocks & put them in my N.f.T system. I am using quarter strenth nutrients ( canna vega A+B & rhizotonic) my P.H level is 6.2-6.4 i am using 250watt MH light. The cuttings...