AvoidantGrower commented8y ago
I dont know about lightburn, I would lean towards the soil being pH locked or too high in PPMs and needs good flushing or since its a 0.5 gallon pot maybe flip it and check the root ball and if it looks healthy maybe try flushing or transplanting in a bigger pot with fresh soil. I'm a noob though so take anything I say with a grain of salt.
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