# Another question about PPMs

**URL:** <https://ilgmforum.com/t/another-question-about-ppms/15720>\
**Category:** Preparations\
**Created:** [October 12, 2017, 1:27pm UTC](https://ilgmforum.com/t/another-question-about-ppms/15720 "2017-10-12T13:27:26Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![JuliaBelle](https://avatars.discourse-cdn.com/v4/letter/j/2acd7d/32.png) [@JuliaBelle](https://ilgmforum.com/u/JuliaBelle)\
**Post date:** [October 12, 2017, 1:27pm UTC](https://ilgmforum.com/t/another-question-about-ppms/15720/1 "2017-10-12T13:27:26Z")

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I’m still trying to wrap my head around what PPMs mean and how I should be measuring them. I’m growing in soil and using FF nutes. When I add the amount listed on the schedule based on the week I’m in, the PPMs measure around 600, but the schedule says they should be 1750-2100. So does that mean I need to add more nutes until I get to that number?

I’m not using every single product listed on the feeding schedule, so that could be why. My plants are looking good - no deficiencies apparent, and no nute burn. Am I underfeeding them if I don’t add more nutes to bring up the PPMs?

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**Author:** ![Donaldj](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/donaldj/32/76518_2.png) [@Donaldj](https://ilgmforum.com/u/Donaldj)\
**Post date:** [October 12, 2017, 2:03pm UTC](https://ilgmforum.com/t/another-question-about-ppms/15720/2 "2017-10-12T14:03:30Z")

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Your plants should be biggest indicator of what is and isn’t working each strain will like more or less nutrients since no 2 plants are alike ppm is a rough way of judging what they have there to build off of. Some people like to try and push ppm until plants shows signs of overfeeding I prefer less is more approach but ppm is a good way of tracking what worked for each strain

> **[Growing schedule for hydroponics](https://www.ilovegrowingmarijuana.com/growing/hydroponic-growing-schedule/)**
>
> Growing schedule for hydroponics

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**Author:** ![Myfriendis410](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/myfriendis410/32/556067_2.png) [@Myfriendis410](https://ilgmforum.com/u/Myfriendis410)\
**Post date:** [October 12, 2017, 2:09pm UTC](https://ilgmforum.com/t/another-question-about-ppms/15720/3 "2017-10-12T14:09:46Z")

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I had this question with regards to coco and the answer I got was the same. We generally overfeed and 500 to 600 ppm is generally a good place to start from. Let your plants tell you from there.