System selector
Pick the system you actually have room for
Three families cover almost every home build. Choose one to filter the library below, or step through all of them.
- Build manualKratky still waterLeafy greens
Kratky Lettuce Bucket: a 12 L no-pump system that runs 35 days on one charge
The Kratky method grows lettuce in a bucket with no pump, no air stone and no electricity beyond a light. You charge the reservoir once, set the pots, and let the wate…
Open the manual → - Build manualKratky still waterHerbs
Kratky Herb Jars: three 1 L windowsill jars that beat a supermarket pot by week six
A supermarket herb pot costs more than the whole setup described here and dies in ten days. Three opaque mason jars, a bag of clay pebbles and one bottle of nutrient w…
Open the manual → - Build manualKratky still waterMicrogreens
Kratky Microgreen Tray: sunflower and radish in 12 days on 8 mm of solution
Microgreens are the fastest thing you can grow hydroponically and the easiest to ruin with kindness. The whole cycle is twelve days, the reservoir is 8 mm deep, and al…
Open the manual →
Latest entries
- Nutrient chartLeafy greens
Lettuce Head Finish Chart: what changes in the last ten days
Most lettuce guides stop at the vegetative stage. The final ten days are where tipburn appears, where shelf life is won or lost, and where the plant's nitrogen demand changes direction co…
Open the manual → - Build manualKratky still waterMicrogreensBeginner
Kratky Microgreen Tray: sunflower and radish in 12 days on 8 mm of solution
Microgreens are the fastest thing you can grow hydroponically and the easiest to ruin with kindness. The whole cycle is twelve days, the reservoir is 8 mm deep, and almost every failure c…
Open the manual → - Nutrient chartMicrogreens
Microgreen EC and pH Chart: 12 days on almost no nutrient at all
Microgreens are the only hydroponic crop where the correct nutrient answer is close to none. The seed supplies everything the plant needs for the whole cycle, and the reservoir exists mai…
Open the manual → - Maintenance calendarPumped systems
NFT Flow Check: five things to verify every three days
An NFT system has a very small buffer. The plants live on a film of water a few millimetres deep, and anything that changes the hydraulics of that film changes the crop within hours. A th…
Open the manual → - Build manualDeep water cultureSoft fruitIntermediate
DWC Strawberry Tower: 18 plants in 1.6 m of column, on a 30 L reservoir
A vertical DWC tower fits eighteen strawberry plants into the footprint of a single bucket, which is the only reason it makes sense on a balcony. What makes or breaks it is port geometry:…
Open the manual → - Build manualKratky still waterHerbsBeginner
Kratky Herb Jars: three 1 L windowsill jars that beat a supermarket pot by week six
A supermarket herb pot costs more than the whole setup described here and dies in ten days. Three opaque mason jars, a bag of clay pebbles and one bottle of nutrient will produce cut mint…
Open the manual →
