Remote Sensors For Long Grows
Cheap wireless sensors that log temperature and humidity to a phone turn a five month sativa grow into something you can review rather than guess about. Seeing that the tent hit thirty three degrees every afternoon for a week explains a stall that no amount of leaf inspection would have revealed. The monitoring section on https://hazesativaseeds.com compares a few consumer sensors and recommends placing one at canopy height and one near the floor, since tall plants span a big temperature gradient. Alerts for a fan failure at three in the morning have saved me at least one crop.
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