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indoorherbs
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I make it easy, water the recommended dosage on the label for 5 days straight, then 2 days of plain PH'd water. This way you wont over nute. Depending how big your plant and root system depends on how much your plant eat, so you gotta eyeball how much food it takes in everyday. Water till it drains, once it drains its fully fed. But if you water the plants when its extremely dry, it tends to drain real fast and eat up again, so make sure your plants get enough water.
That's not a guarantee that you won't overnute.
The only way to be sure you don't overnute is to NOT PUT TOO MUCH FERT IN.
If you nute once a month, but you fert way too much you'll still overnute no matter how many waterings you do inbetween.
You could nute every single watering and undernute if you do it light enough.
You have to feed the right amount. Frequency, concentration, whatever, you have to add it all up and take it all into account. No single factor will guarantee success or failure.