yeah, I know rhino skin is watered down as hell, my point was just that they are both the same simple salt and water, protekt is stronger but they are both bottling a simple salt and fucking you, protekt may have an extra 3 cents of potassium silicate in it, that doesn't make it a good deal.AN Rhino is such a diluted rip-off Jbone. It has only a fraction of the silicate you are after compared to Pro-Tekt or Humboldts S.I..
The reason they offer it is to satisfy those who want the AN line of silicate to keep under the PH-Perfect compatability umbrella. The only way to offer it in a 2ml/l dilution is to water it down so much that the dosage won't effect the PH. Could you imaging what 2ml/l of pro-Tekt will do to the PH? look out !!
FP in PRO-MIX for VEG is damn good. I'm with you on the Sensi, but I use it in bloom. Never had any cal/mag or any other issue with this scenario. No, I don't have 30 uniiversity studies supporting the other ingredients Sensi bloom provides but I like the product for what it delivers.