LeastExpectedGrower
Well-Known Member
The targets on that feed chart are insane. Even half of that is what I would feed a plant toward the end of veg. I tried 1ml of FP and it sent the PPM to 270 so already a bit hot for them this early. I watered down the solution to 150. I already have 20ml syringes, but I'll order a 10 and 1 as well.
I use the 1ml ones for things like Ca/Mg where I'm doing things like 1 or 1.5 ml, etc. or other things that are concentrated. The slightly larger ones are useful for things like pH Up, and such.
In terms of nutrient strength, right now I have a pair of "ChocoDope" plants that are not showing any signs of burn at 2.1EC. I've not fed any other plants nearly so heavily but these ones were verging on deficiencies & just a bit too light in color with less than that. So it really depends on the plants. I've had some that got grumpy at half that rate.