diff --git a/biofuel-manager.lua b/biofuel-manager.lua
index 57a6267..f9ee1d2 100644
--- a/biofuel-manager.lua
+++ b/biofuel-manager.lua
@@ -1,15 +1,13 @@
 -- program to manage a biofuel factory with create and some addons + tweaks
--- NOTE: this design does not handle stocking cinder flour or sugar
+-- NOTE: this design does not handle stocking the system
 
 local STORAGE = ""
 local OIL_TANK = ""
 local FUEL_TANK = ""
 
-local MAIN_SEED_REQUEST = "minecraft:melon_seeds"
-local MAIN_PLANT_REQUEST = "minecraft:bamboo"
+local FACTORY_ADDRESS = ""
 
 local SPEEDOMETER = ""
-local MAIN_REQUESTER = ""
 local SUBNET_TICKER = ""
 
 local SLEEP_T = 10
@@ -103,38 +101,63 @@ local order = {
 
 local stock = {
     seeds = function (amt, requester)
-        -- TODO
+        requester.setRequest({ name = MAIN_SEED_REQUEST, count = amt })
+        requester.request()
     end,
     plants = function (amt, requester)
-        -- TODO
+        requester.setRequest({ name = MAIN_PLANT_REQUEST, count = amt })
+        requester.request()
     end,
 }
 
-function getStockRequirements ()
-    -- TODO
+function listItems (storage)
+    local tally = {}
+    for _, item in pairs(peripheral.call(storage, "list")) do
+        if tally[item.name] == nil then tally[item.name] = 0 end
+        tally[item.name] = tally[item.name] + item.count
+    end
+    return tally
 end
 
 function getOrders ()
-    -- TODO
+    local orders = {}
+    -- Oil
+    local oil_amt = table.remove(peripheral.call(OIL_TANK, "tanks"))
+    if oil_amt == nil then oil_amt = 0 end
+    local oil_needed = OIL_SETPOINT - oil_amt
+    if oil_needed > 0 then orders.oil = oil_needed end
+    -- Biomass
+    -- TODO use up excess material
+    local biomass_amt = listItems(STORAGE)["createaddition:biomass"]
+    if biomass_amt == nil then biomass_amt = 0 end
+    local biomass_needed = BIOMASS_SETPOINT - biomass_amt
+    if biomass_needed > 0 then orders.biomass = biomass_needed end
+    -- Biofuel
+    -- TODO use up excess material?
+    local biofuel_amt = table.remove(peripheral.call(FUEL_TANK, "tanks"))
+    if biofuel_amt == nil then biofuel_amt = 0 end
+    local biofuel_needed = BIOFUEL_SETPOINT - biofuel_amt
+    if biofuel_needed > 0 then orders.biofuel = biofuel_needed end
+    return orders
 end
 
-function run (requester, ticker)
+function run (ticker)
     if peripheral.call(SPEEDOMETER, "getSpeed") ~= 0 then
-        local need_to_stock = getStockRequirements()
         local need_to_create = getOrders()
-        for type, amt in pairs(need_to_stock) do
-            stock[type](amt, requester)
-        end
         for type, amt in pairs(need_to_create) do
             order[type](amt, ticker)
         end
     end
     os.sleep(SLEEP_T)
-    return run(requester, ticker)
+    return run(ticker)
 end
 
 if arg ~= nil and arg[1] == "run" then
-    local requester = peripheral.wrap(MAIN_REQUESTER)
     local ticker = peripheral.wrap(SUBNET_TICKER)
-    run(requester, ticker)
+    local ran = false
+    while not ran do
+        ran, result = run(ticker)
+        if not ran then print(result) end
+        os.sleep(SLEEP_T)
+    end
 end