diff --git a/angelssmelting/prototypes/recipes/smelting-copper.lua b/angelssmelting/prototypes/recipes/smelting-copper.lua
index 41c394be..d42f21f5 100644
--- a/angelssmelting/prototypes/recipes/smelting-copper.lua
+++ b/angelssmelting/prototypes/recipes/smelting-copper.lua
@@ -103,7 +103,7 @@ data:extend({
     enabled = false,
     ingredients = {
       { type = "item", name = "anode-copper", amount = 12 },
-      { type = "fluid", name = "liquid-sulfuric-acid", amount = 30 },
+      { type = "fluid", name = "liquid-sulfuric-acid", amount = 10 },
     },
     results = {
       { type = "item", name = "ingot-copper", amount = 12 },
diff --git a/angelssmelting/prototypes/recipes/smelting-manganese.lua b/angelssmelting/prototypes/recipes/smelting-manganese.lua
index db6d8406..85006a0c 100644
--- a/angelssmelting/prototypes/recipes/smelting-manganese.lua
+++ b/angelssmelting/prototypes/recipes/smelting-manganese.lua
@@ -85,7 +85,7 @@ data:extend({
     enabled = false,
     ingredients = {
       { type = "item", name = "processed-manganese", amount = 4 },
-      { type = "fluid", name = "liquid-sulfuric-acid", amount = 40 },
+      { type = "fluid", name = "liquid-sulfuric-acid", amount = 10 },
     },
     results = {
       { type = "item", name = "cathode-manganese", amount = 12 },
@@ -107,7 +107,7 @@ data:extend({
     ingredients = {
       { type = "item", name = "solid-manganese-oxide", amount = 12 },
       { type = "item", name = "ingot-iron", amount = 4 },
-      { type = "fluid", name = "liquid-sulfuric-acid", amount = 40 },
+      { type = "fluid", name = "liquid-sulfuric-acid", amount = 10 },
     },
     results = {
       { type = "item", name = "cathode-manganese", amount = 12 },