# Grod - Stage 4 (technology) internal name `grod-mk04` · tier 8 (pY science pack 4, [tier 8](https://factorio.kalzumeus.com/tier/8.md)) HTML page: https://factorio.kalzumeus.com/tech/grod-mk04/ ## Cost 3300 units of (1 × [pY science pack 4](https://factorio.kalzumeus.com/item/py-science-pack-4.md), 2 × [Production science pack](https://factorio.kalzumeus.com/item/production-science-pack.md), 3 × [pY science pack 3](https://factorio.kalzumeus.com/item/py-science-pack-3.md), 6 × [Chemical science pack](https://factorio.kalzumeus.com/item/chemical-science-pack.md), 10 × [pY science pack 2](https://factorio.kalzumeus.com/item/py-science-pack-2.md), 20 × [Logistic science pack](https://factorio.kalzumeus.com/item/logistic-science-pack.md), 30 × [pY science pack 1](https://factorio.kalzumeus.com/item/py-science-pack-1.md), 60 × [Automation science pack](https://factorio.kalzumeus.com/item/automation-science-pack.md), 10 × [Military science pack](https://factorio.kalzumeus.com/item/military-science-pack.md)), 450 s each. ## Requires (3) - [Grod - Stage 3](https://factorio.kalzumeus.com/tech/grod-mk03.md) - [Pesticides - Stage 2](https://factorio.kalzumeus.com/tech/pesticides-mk02.md) - [pY science pack](https://factorio.kalzumeus.com/tech/py-science-pack-4.md) ## Leads to (0) - none ## Unlocks (5 recipes) ### Grod (`grod-4`) - 30 s · tier 8 · productivity modules allowed - Ingredients: 5 × [Grod seeds](https://factorio.kalzumeus.com/item/grod-seeds.md), 30 × [Urea](https://factorio.kalzumeus.com/item/urea.md), 500 × [Water](https://factorio.kalzumeus.com/fluid/water.md), 5 × [Limestone](https://factorio.kalzumeus.com/item/limestone.md), 10 × [Soil](https://factorio.kalzumeus.com/item/soil.md), 13 × [Fertilizer](https://factorio.kalzumeus.com/item/fertilizer.md), 10 × [Ash](https://factorio.kalzumeus.com/item/ash.md), 10 × [Biomass](https://factorio.kalzumeus.com/item/biomass.md), 6 × [Coarse fraction](https://factorio.kalzumeus.com/item/coarse.md), 2 × [Pesticide MK 01](https://factorio.kalzumeus.com/item/pesticide-mk01.md), 70 × [Slaked lime](https://factorio.kalzumeus.com/fluid/slacked-lime.md), 2 × [Pesticide MK 02](https://factorio.kalzumeus.com/item/pesticide-mk02.md), 40 × [Flue gas](https://factorio.kalzumeus.com/fluid/flue-gas.md), 1 × [Growth factor](https://factorio.kalzumeus.com/item/gh.md) - Results: 42 × [Grod](https://factorio.kalzumeus.com/item/grod.md) - Made in: Grod swamp MK 01, Grod swamp MK 02, Grod swamp MK 03, Grod swamp MK 04 - Unlocked by: [Grod - Stage 4](https://factorio.kalzumeus.com/tech/grod-mk04.md) ### Phase 4 Grod breeding program (`grod-mk04`) - 30 s · tier 8 - Ingredients: 2 × [Grod MK 03](https://factorio.kalzumeus.com/item/grod-mk03.md), 1 × [Zinc finger fusion proteins](https://factorio.kalzumeus.com/item/zinc-finger-proteins.md), 10 × [Grod seeds MK 03](https://factorio.kalzumeus.com/item/grod-seeds-mk03.md), 300 × [Carbon dioxide](https://factorio.kalzumeus.com/fluid/carbon-dioxide.md), 10 × [Fertilizer](https://factorio.kalzumeus.com/item/fertilizer.md), 10 × [Limestone](https://factorio.kalzumeus.com/item/limestone.md), 1000 × [Water](https://factorio.kalzumeus.com/fluid/water.md) - Results: 0.003 × [Grod MK 04](https://factorio.kalzumeus.com/item/grod-mk04.md) (0.3% chance), 0.7 × [Grod](https://factorio.kalzumeus.com/item/grod.md) (70% chance) - Made in: Grod swamp MK 01, Grod swamp MK 02, Grod swamp MK 03, Grod swamp MK 04 - Unlocked by: [Grod - Stage 4](https://factorio.kalzumeus.com/tech/grod-mk04.md) ### Phase 4 Grod raising program (`grod-mk04-breeder`) - 80 s · tier 8 - Ingredients: 10 × [Grod seeds MK 04](https://factorio.kalzumeus.com/item/grod-seeds-mk04.md), 300 × [Slaked lime](https://factorio.kalzumeus.com/fluid/slacked-lime.md), 10 × [Fertilizer](https://factorio.kalzumeus.com/item/fertilizer.md), 10 × [Limestone](https://factorio.kalzumeus.com/item/limestone.md), 1 × [Zinc finger fusion proteins](https://factorio.kalzumeus.com/item/zinc-finger-proteins.md), 1 × [Pesticide MK 02](https://factorio.kalzumeus.com/item/pesticide-mk02.md), 1000 × [Water](https://factorio.kalzumeus.com/fluid/water.md), 10 × [Urea](https://factorio.kalzumeus.com/item/urea.md) - Results: 7 × [Grod MK 04](https://factorio.kalzumeus.com/item/grod-mk04.md), 0.6 × [Grod MK 04](https://factorio.kalzumeus.com/item/grod-mk04.md) (30% chance of 2), 0.7 × [Grod MK 03](https://factorio.kalzumeus.com/item/grod-mk03.md) (70% chance) - Made in: Grod swamp MK 01, Grod swamp MK 02, Grod swamp MK 03, Grod swamp MK 04 - Unlocked by: [Grod - Stage 4](https://factorio.kalzumeus.com/tech/grod-mk04.md) ### Phase 4 Grod seed harvesting program (`grod-seeds-mk04-breeder`) - 80 s · tier 8 - Ingredients: 2 × [Grod MK 04](https://factorio.kalzumeus.com/item/grod-mk04.md) - Results: 2 × [Grod seeds pod MK 04](https://factorio.kalzumeus.com/item/grod-seeds-pod-mk04.md) - Made in: Grod swamp MK 01, Grod swamp MK 02, Grod swamp MK 03, Grod swamp MK 04 - Unlocked by: [Grod - Stage 4](https://factorio.kalzumeus.com/tech/grod-mk04.md) ### Phase 4 Grod seed acid preparation (`grod-seeds-mk04-soaker`) - 20 s · tier 8 - Ingredients: 2 × [Grod seeds pod MK 04](https://factorio.kalzumeus.com/item/grod-seeds-pod-mk04.md), 100 × [Methanesulfonic acid (MSA)](https://factorio.kalzumeus.com/fluid/msa.md) - Results: 4 × [Grod seeds MK 04](https://factorio.kalzumeus.com/item/grod-seeds-mk04.md) - Made in: Centrifuge, Centrifuge MK 01, Centrifuge MK 02, Centrifuge MK 03, Centrifuge MK 04 - Unlocked by: [Grod - Stage 4](https://factorio.kalzumeus.com/tech/grod-mk04.md)