I use the H&G line. From what I know it's practically identical to the Canna line. Supposedly the van der zwaan fella used to work with/for canna developing their a+b formula and then he left to start his own company.
Their additives are a lil different though maybe than the canna line.
I used the H&G in coco at the normal strength rates on the chart. I also used cannaboost last time on top of the whole H&G line. Not sure if that was a good idea as I've recently heard the H&G's budXL is their version of cannaboost. Honestly I think the budxl is more like sugars cuz it smells just like molasses.
Anyhow I didn't have such a great harvest, but I won't blame it on the boost other factors weren't dialed in on that grow.
I've had excellent results using the H&G line in
canna coco. The only thing is you have to add
calmag to every feeding or you can end up with deficiencies.
Right now I'm running the H&G, but I'm just using the basics seems to be working just as well as when I used the whole line. haha