DIY: Hydroponics — How To Make Reusable Foam Mat Grow Medium For 1.5-Inch Container Hole.

Previous foam mat design was made as replacement for the 2.8" net cups, which explains the large size. This new foam mat grow medium was designed to work on hydroponic plant containers with smaller opening, that are just enough for mature plant roots to pass through during final harvest. Smaller size meant a single foam mat can yield more units. A few design changes were added to compensate for plant growth and fit.

It's another long video, but it can't be helped.

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