Houseplant Q&A: Dieffenbachia yellowing, peace lily brown tips

I've received hundreds of pictures and questions through my "help @ houseplantjournal.com" email. I'll continue to share some responses with you in the hopes that you can learn how to better analyze your situation, enjoy plants more, and worry less.
The LTH Meter: the first meter that measures light, temperature, and humidity
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My book: 'The New Plant Parent'
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Making sense of houseplant care everyday on Instagram:
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