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I just read this on instagram posted by autopot: the irony haha
Simply supply pH correct plain water and a flushing agent if you choose to use one, from the reservoir to the modules for the last 10-14 days. DO NOT pour water through the top of the pots. Salt build-up occurs in the top 1"/2.5cm of the substrate, where it has no detrimental effect on plant growth. Pouring water through the top of the pot at the flushing stage (or anytime after you turn the system on) may damage roots due to the toxicity of the salt build-up at the top of the substrate that would get pushed down into the root zone.
Flushing from the bottom pushes the salts in the media further up into the top portion of the substrate away from the roots. You end up with the same results as if you would have flushed from the top.
Tl;dr Feed only pH correct plant water through your reservoir for the last 10-14 days to flush from the bottom. Salts are pushed to the top of substrate away from the roots. Do not flush from the top!
Simply supply pH correct plain water and a flushing agent if you choose to use one, from the reservoir to the modules for the last 10-14 days. DO NOT pour water through the top of the pots. Salt build-up occurs in the top 1"/2.5cm of the substrate, where it has no detrimental effect on plant growth. Pouring water through the top of the pot at the flushing stage (or anytime after you turn the system on) may damage roots due to the toxicity of the salt build-up at the top of the substrate that would get pushed down into the root zone.
Flushing from the bottom pushes the salts in the media further up into the top portion of the substrate away from the roots. You end up with the same results as if you would have flushed from the top.
Tl;dr Feed only pH correct plant water through your reservoir for the last 10-14 days to flush from the bottom. Salts are pushed to the top of substrate away from the roots. Do not flush from the top!