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Instructor demonstrates small hydroponic system setup, stresses pH checks and hydroponic-only inputs
Summary
A presenter demonstrated a small hydroponic system, showing pump and air-stone setup, raft placement and pH testing; the instructor warned to use only hydroponic-specific fertilizers and to adjust pH with appropriate acids.
An instructor demonstrated a small hydroponic system and walked attendees through pump adjustments, air-stone placement, raft installation and pH testing.
In a hands-on demonstration, the presenter showed the water pump, inline flow adjustments and air stones used to oxygenate the tubs, advising attendees to "give it a few minutes" if the system gurgles and to "adjust it just a hair" on the inlet or inline valves. The demonstrator turned on LED lighting to show the setup and noted an optional…
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