I used to use Floraliscous grow and bloom. If I remember correctly it was like 5 ml to one gallon of reservoir. I switched to Floraliscous Plus because you use a lot less, there is only one part to it (not grow AND bloom), and it has added beneficial bacteria. I remember the original Floraliscous to be REALLY smelly after adding to my resevoir. Not good for a need for stealth. It also turns your rez water a very dark color. For my five gallon reservoir, a quart bottle of each was way more than I needed.
I switched to Floraliscous Plus, I only add a teaspoon (5 ml) to five gallons of reservoir. It smells less, and the beneficial bacteria work perfectly with Hygrozyme or similar root zone supplements.
I use FloraNova series by GH along with the rest of their line of supplements including Koolbloom. I do not use Florasheild and recomend you don't either. Ph is very stabile. I adjust it to about 5.4 after rez changes, it creeps up to 5.8-6.0 and stops. THey buffer this stuff perfectly.

Thank you GH!!!!!!!!!!