diff --git a/biofuel-manager.lua b/biofuel-manager.lua
new file mode 100644
index 0000000..1b90311
--- /dev/null
+++ b/biofuel-manager.lua
@@ -0,0 +1,172 @@
+-- program to manage a biofuel factory with create and some addons + tweaks
+-- NOTE: this design does not handle stocking the system
+
+local STORAGE = ""
+local OIL_TANK = ""
+local FUEL_TANK = ""
+
+local OIL_SETPOINT = 64000
+local BIOMASS_SETPOINT = 4 * 64
+local BIOFUEL_SETPOINT = 128000
+
+local SPEEDOMETER = ""
+local SUBNET_TICKER = ""
+
+local SLEEP_T = 10
+
+local OIL_PKG = "Oil"
+local BIOMASS_PKG = "Biomass"
+local BIOFUEL_PKG = "Biofuel"
+
+local order = {
+    oil = function (amt, ticker)
+        local orderCount = math.floor(amt / 100)
+        local request = {
+            tags = {
+                ["c:seeds"] = true,
+            },
+            _requestCount = orderCount,
+        }
+        return ticker.requestFiltered(OIL_PKG, request)
+    end,
+    biomass = function (amt, ticker)
+        -- TODO make order_amt calculation less naive
+        local order_amt = amt * 3
+        local request = {
+            _op = "any",
+            _requestCount = order_amt,
+            value = {
+                { name = {
+                    _op = "any",
+                    value = {
+                        "minecraft:stick",
+                        "minecraft:honeycomb"
+                    }
+                } },
+                { tags = { _op = "any", value = {
+                    { ["minecraft:flowers"] = true },
+                    { ["c:crops"] = true },
+                    { ["createaddition:plant_foods"] = true },
+                    { ["createaddition:plants"] = true },
+                    { ["minecraft:saplings"] = true },
+                    { ["minecraft:leaves"] = true },
+                } } },
+            }
+        }
+        return ticker.requestFiltered(BIOMASS_PKG, request)
+    end,
+    biofuel = function (amt, ticker)
+        local request = function ()
+            local biomass = {
+                name = "createaddition:biomass",
+                _requestCount = 32
+            }
+            local sugar = {
+                name = "minecraft:sugar",
+                _requestCount = 16
+            }
+            local cinder_flour = {
+                name = "create:cinder_flour",
+                _requestCount = 16
+            }
+            return biomass, sugar, cinder_flour
+        end
+        local enoughMaterials = function ()
+            -- use ticker to test ( biomass >= 32, sugar >= 16, and cinder flour >= 16
+            local check = {}
+            check["createaddition:biomass"] = 32
+            check["minecraft:sugar"] = 16
+            check["create:cinder_flour"] = 16
+            for _, item in pairs(ticker.stock()) do
+                if check[item.name] then
+                    check[item.name] = check[item.name] - item.count
+                end
+            end
+            local enough_materials = true
+            for name, count in pairs(check) do
+                if count > 0 then enough_materials = false end
+            end
+            return enough_materials
+        end
+
+        local amt_made = 0
+        while amt_made < amt do
+            if not enoughMaterials() then break end
+            ticker.requestFiltered(BIOFUEL_PKG, request())
+            amt_made = amt_made + 2000
+            os.sleep(1)
+        end
+        return amt_made
+    end,
+}
+
+local stock = {
+    seeds = function (amt, requester)
+        requester.setRequest({ name = MAIN_SEED_REQUEST, count = amt })
+        requester.request()
+    end,
+    plants = function (amt, requester)
+        requester.setRequest({ name = MAIN_PLANT_REQUEST, count = amt })
+        requester.request()
+    end,
+}
+
+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 ()
+    local orders = {}
+    -- Oil
+    local oil_amt = table.remove(peripheral.call(OIL_TANK, "tanks"))
+    if oil_amt == nil then
+        oil_amt = 0
+    else
+        oil_amt = oil_amt.amount
+    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
+    else
+        biofuel_amt = biofuel_amt.amount
+    end
+    local biofuel_needed = BIOFUEL_SETPOINT - biofuel_amt
+    if biofuel_needed > 0 then orders.biofuel = biofuel_needed end
+    return orders
+end
+
+function run (ticker)
+    if peripheral.call(SPEEDOMETER, "getSpeed") ~= 0 then
+        local need_to_create = getOrders()
+        for type, amt in pairs(need_to_create) do
+            order[type](amt, ticker)
+        end
+    end
+    os.sleep(SLEEP_T)
+    return run(ticker)
+end
+
+if arg ~= nil and arg[1] == "run" then
+    local ticker = peripheral.wrap(SUBNET_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