Quote Originally Posted by SAP420
I can tell you from experience that with the floranova series nutes, you will never need to use more than 2 tbsp of grow per gallon of water in veg mode and when transitioning to bloom you should do 1 tbsp of grow and 1 tbsp of bloom per gallon of water. Then after that week go straight to 2 tbsp of bloom per gallon of water. Never necessary to mix any stronger than that. Any stronger and you risk nute burn on your plants.
Well SAP that is all true, BUT unless you are in the habit of discarding the nutes left in your reservoir (instead of topping it off), and then starting fresh with water and your formula of nutrients, how do you know how much nutes is left in the bin? I don't mean how many gallons you have, but the proportion of nutes to water, because often times, especially in the beginning of flowering, say, they may have well extracted much more water than nutes, so all you should be doing is adding water to make it the same strength is was originally. Perhaps near the end of their cycle, they might be taking on more nutrients than water and what you have left is a very very weak solution. How do you do that without a meter?

SN