The second difference comes from the varying components. hydroponics systems are very sterile, and there is no need for any extraneous growing media to support the plants or root systems. aquaponics, on the other hand, needs an environment around the roots to harbor the beneficial microorganisms. hydroponics doesn’t need deep growing media to support the plants or root systems. some hydroponic systems even don’t use any growing materials. startup cost/speed. In hydroponic systems, “pythium” can run amok and cause all sorts of problems. in an aquaponics system, the onset of this pythium that results in root rot is almost non-existent because the plants build up tolerances against it. aquaponics disadvantages. although aquaponics does have plenty of positives, there are a few downsides..
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