ONCE a WEEK! But do not ration your feeding solution. Use it the way you use water-- mix your solution, then use it to water the plant until some comes out the bottom of the planter. Don't water again until the top 2 inches of soil dry out.
As for how much to use in the solution-- this is why a Meter is so important. a PPM/EC meter tells you exactly how much nutrient your solution contains so you can lower or rais the amount as needed....
In bloom, my EC starts around 1.4 week one, and raises each week until I get to 1.6-2.0 (depending on the strain we are growing) for the last 2 weeks.
More isn't always better- and could kill them--but to little will make them too weak to make big buds.
There should be a chart on the bottle of nutes that "1tb per gallon=200 ppm" or something along those lines... if not, go online to that companies website and find their feeding chart.
No need for revenge, just sit back and wait.
Those who have hurt you will screw eventually themselves; and if you are lucky, God will let you watch!
Through What we create- we are immortal.