Mason Jar Kratky Hydroponic Lid
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A lid for a regular mouth mason jar to hold a 1.5" Rockwool cube for Kratky hydroponic growing.
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Model information
- Source
- Printables
- Category
- Outdoor & Garden
- License
- Creative Commons — Attribution — Noncommercial — Share Alike
This is a simple model that prints with about 8g of filament, without supports.
Print with the flat side down, .20mm layers, 4 walls, no supports. Fits up to 9 on a 210x210 plate.
The holder for the rockwool cube does not have a bottom, making it easier to remove with the root mass intact, if you want to replant in soil.
To use, transplant seedlings from a tray once roots begin to show through. To begin you can fill the jar with nutrient solution up to the bottom of the cube, but take care not to immerse the whole cube. The Kratky method needs room for air roots to form.
The photos here are in clear jars, but it's best to use tape or paint to block the light so the roots are less prone to algae growth.