Lower leaves going yellow, then crusty and brown

Phytoplankton said:

Need more info, are you using nutes, if so, how much/what kind. Are you PHing your input water? How often are you watering? Soil looks very wet.

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sensimilius said:

Just you mentioning nutes reminded me this started showing as soon as i starting going heavy on the nutes (really what the packaging recommends). Was using a one-size-fits-all type of nutes, while I waited for the good stuff I ordered to get delivered. Haven't touched the stuff in a couple weeks now though and the symptoms seem to be progressing

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