Oh, and don't feed every time you water. That is how I use the PPM. I feed when the run-off shows that they have eaten most of what was there already.
2-3 days is a good timeframe for watering, but it depends on plant size and pot size. Lift the pot before you water. If it is heavy - there is still water.
One of the easiest things you can do to get better at growing is recognizing when they need food or water, and when they don't.
If you have a pic of the plant/pot you have issues with there's a lot people can pick up on besides what you showed with a few plucked leaves.