Run off seems ok. At this stage where plants at it just don`t wanna be coming out any higher than your putting in through top of pots. You also don`t wanna be putting too much in top, dont go any higher cus for where thery are at i reckon that`ll be a pretty high ppm ? Were talking not far from a full dose for fully grown plants or so i would think cus those ferts are pretty heavy on N.P.K > 9.5.16 ones i generally use are 5.4.3 > N.P.K in fact what was ppm of ferts you gave ? Just keep an eye on them for burny type symptoms starting up, but i think it`ll have plenty of roots now to cope with higher dose and it was a mature cutt so in my mind that`s sound. Ive never really used calmag, maybe to foliar spray once upon a time, but yes im not sure how much of that to add so don`t go crazy their either cus the ferts have a bit in already, iff they look like they are greening up and not getting worse nerxt feed i`d maybe stick with your original dose of 0.5ml a ltr
Just check run off every few weeks mate to make sure its not crazy high above what`s going in top and you should be sound but if it climbs too high they may need a flush through or a few feeds of water before putting plants back on a slightly lower dose of ferts. Jobs a good en though . Keep some pictures coming of plant as a whole every now n then and ill sub up to this thread.