Any experienced farmers useing canna aqua vega , RHIZOTONIC ,CANNAZYM ,CANNABOOST new to these nutes

Well ive done tons of soils , and trying to help a buddy out at the moment so id like to get a better understanding on these canna nutes so I can offer him better advice an help him during his process as ive done tons before but on 'soil' MIX'S ,He purchased those nutes I have stated , I have looked on there site an seen they have a feeding guide , my question is does that guide actually have good results by sticking to it? I know the guys have to know there stuff , but I also know different strains different strokes lol... he is running a small personal setup for to treat him self as he suffers from anxiety an few other things... 1 critical sensi star , 1 g13 blueberry gum, 1 Pakistan ryder an 1 bomb berry.. This is all run off a 2 gallon resovoir with a drip system using rockwool cubes transplanted into 6x6 hugo blocks... I told him try coco but he went with this.. So id like to talk with a few experienced growers that use these products on a drip system , that can give me a more accurate pointer then there website ..Seeds were germinated in rockwool an have come up .. now they are under some t5s? when is a good time to start feeding them nutes? And what should I use ? ive herd aqua vega a/b an add the rhizotonic to them early to develop roots at what wee would it be a good idea to do so? thanksin advance ...
cheers

I use there nutes, was using there normal a and b but just switched to the aqua for more stable ph, still seems to swing so check ph daily. I personally use there grow guide, just slightly less than what it says eg if it asks for 40 of a and b I would put in 35. People slate canna a bit on here but I personally think its real good just follow the guide and they will come out spot on, never had nute burn.
Once roots are showing 1/4 strength nutes then slowly up it. The grow guide does tell you very accurately what to do though,
I found that if you are really keen you can keep a diary of your ppm, and adjust up or down for how much they re eating