Seven crop profiles
Lettuce, basil, fodder maize, tomato, cucumber, capsicum and strawberry — staged, banded, and weighted towards an Indian polyhouse rather than a Dutch one. Three are free.
Read the profilesThe loop that holds the liquid.
Air forgets. Stop a fan and the room is back where it started in twenty minutes. A reservoir does not: acid put into it is in it until the crop is finished, and the only way out of a mistake is two hundred litres down a field drain. Everything here is built to be reluctant — it doses small, it waits ten minutes before it looks again, and it stops permanently when the tank answers a dose in the wrong direction.
A reservoir that fights back
Carbonate chemistry solved properly, so hard water resists and then falls off a cliff exactly as it does in a tank. Run thirty days against your own water in under a second.
Run a cropCrop steering
One slider from vegetative to generative, seven levers derived from it, every derived number visible and every one overridable. And the three measurements that say whether it landed.
Steer a cropDevices, by capability
The control logic asks for "a pH reader in zone 3", never for a device. Add support for new hardware by writing a YAML file — no code, no release.
See what worksSize it before you buy it
Reservoir, circulation, chiller and aeration worked from your plant count and your ambient temperature, with rupee prices for all three tiers.
Size a systemWhat it costs
Free for one zone and three crops, forever. Paid for the steering solver, the driver library and the crops that carry the margin.
PricingWhere this deliberately stops
The control loop does not run on this website. It runs on a board in the polyhouse, holding its own copy of the recipe in flash, and it keeps irrigating when the hub, the laptop, the router and the internet have all disappeared at once. That is not an implementation detail, it is the product: an NFT pump stopped for thirty minutes in a Nashik May is a dead crop, and a crop that dies because a website was down is not a crop anybody buys a second controller for.
What lives here is everything outside that path — the agronomy, the sizing arithmetic, the parts list and the batch record. Useful before you buy and between crops. If this site went offline tomorrow, every installed system would carry on exactly as it was.
It is also why there is no telemetry table. A node sampling eight signals every ten seconds is two million rows a month; the time series belongs on the node and on your own hub, where it costs you nothing and cannot be taken away.
Two things that are not automated, on purpose
Electrical safety. Submerged pumps, heaters and probes share an enclosure with mains voltage and standing water. RCD or ELCB protection is mandatory, and the mains section of anything built from these diagrams must be reviewed by a licensed electrical engineer before it is sold or installed.
Sanitiser dosing. Hypochlorous, peroxide and chlorine dioxide into a recirculating system is a chemical-burn and crop-loss hazard with a narrow safe window and no way back from getting it wrong. This module monitors ORP and raises an alarm. A person doses. That will not change in version one and may never change.
Every band on this site is a literature-derived starting point. None of them has been measured on your water, your cultivar or your polyhouse, and the variable that decides most of it — the alkalinity of what comes out of your borewell — is one this page cannot know. Validate on a small block before you commit a season.