1/4 strength is about right. my simple method for mixing nutes is to use a five gallon bucket and put in the amount listed on their chart that's listed to use per gallon. keeps the ec under .8.
can't imagine running at recommended dosage, don't understand why companies list such high amounts. sure they want customers too buy more product, but if you over fert and torch your plants how likely is someone going to be to turn around and buy more?
that being said, pbn is doing my girls good. absolutely love it. and so much more affordable than anything else i've seen. awesome that they have the package deals with everything you need in one shot. except the cal mag is sold separately.
