diff --git a/code/modules/hydroponics/hydroponics.dm b/code/modules/hydroponics/hydroponics.dm
index 1cd63db6da..d37c5af6c2 100644
--- a/code/modules/hydroponics/hydroponics.dm
+++ b/code/modules/hydroponics/hydroponics.dm
@@ -664,7 +664,7 @@
 		adjustHealth(round(S.get_reagent_amount(/datum/reagent/diethylamine) * 1))
 		adjustNutri(round(S.get_reagent_amount(/datum/reagent/diethylamine) * 2))
 		if(myseed)
-			myseed.adjust_yield(round(S.get_reagent_amount(/datum/reagent/diethylamine) * 0.02))
+			myseed.adjust_yield(round(S.get_reagent_amount(/datum/reagent/diethylamine) * 0.034))
 		adjustPests(-rand(1,2))
 
 	// Nutriment Compost, effectively
diff --git a/code/modules/reagents/reagent_containers/bottle.dm b/code/modules/reagents/reagent_containers/bottle.dm
index c05f4f3e78..e27ff37c5b 100644
--- a/code/modules/reagents/reagent_containers/bottle.dm
+++ b/code/modules/reagents/reagent_containers/bottle.dm
@@ -112,6 +112,11 @@
 	desc = "A small bottle of diethylamine."
 	list_reagents = list(/datum/reagent/diethylamine = 30)
 
+/obj/item/reagent_containers/glass/bottle/saltpetre
+	name = "saltpetre bottle"
+	desc = "A small bottle of saltpetre."
+	list_reagents = list(/datum/reagent/saltpetre = 30)
+
 /obj/item/reagent_containers/glass/bottle/facid
 	name = "Fluorosulfuric Acid Bottle"
 	desc = "A small bottle. Contains a small amount of fluorosulfuric acid."
diff --git a/code/modules/research/designs/biogenerator_designs.dm b/code/modules/research/designs/biogenerator_designs.dm
index dd55697bee..5fff7dc3c4 100644
--- a/code/modules/research/designs/biogenerator_designs.dm
+++ b/code/modules/research/designs/biogenerator_designs.dm
@@ -107,6 +107,22 @@
 	build_path = /obj/item/reagent_containers/glass/bottle/nutrient/rh
 	category = list("initial","Botany Chemicals")
 
+/datum/design/diethylamine
+	name = "Diethylamine"
+	id = "diethylamine_biogen"
+	build_type = BIOGENERATOR
+	materials = list(MAT_BIOMASS = 75)
+	build_path = /obj/item/reagent_containers/glass/bottle/diethylamine
+	category = list("initial","Botany Chemicals")
+
+/datum/design/saltpetre
+	name = "Saltpetre"
+	id = "saltpetre_biogen"
+	build_type = BIOGENERATOR
+	materials = list(MAT_BIOMASS = 125)
+	build_path = /obj/item/reagent_containers/glass/bottle/saltpetre
+	category = list("initial","Botany Chemicals")
+
 /datum/design/weed_killer
 	name = "Weed Killer"
 	id = "weed_killer"