diff --git a/concrete.lua b/concrete.lua
index f9af08c..ee18b18 100644
--- a/concrete.lua
+++ b/concrete.lua
@@ -74,11 +74,15 @@ minetest.register_node("bitumen:curing_concrete", {
 
 minetest.register_abm({
 	nodenames = {"bitumen:wet_concrete", "bitumen:wet_concrete_full", "bitumen:curing_concrete"},
-	interval = 5,
+	interval = 2,
 	chance   = 5,
+	catch_up = true,
 	action = function(pos)
---		minetest.get_node_timer(pos):start(15*60) -- concrete takes half an hour to cure at best
- 		minetest.get_node_timer(pos):start(5) -- fast cure for debugging
+		local t = minetest.get_node_timer(pos)
+		if not t:is_started() then
+			t:start(10*60) -- concrete takes twenty to cure at best
+	-- 		minetest.get_node_timer(pos):start(5) -- fast cure for debugging
+		end
 	end
 })
 
diff --git a/crafts.lua b/crafts.lua
index 20f7e8e..067adf9 100644
--- a/crafts.lua
+++ b/crafts.lua
@@ -146,7 +146,8 @@ minetest.register_craft( {
 		"default:gravel",
 	},
 	replacements = {
-		{ "bucket:bucket_water", "bucket:bucket_empty" }
+		{ "bucket:bucket_water", "bucket:bucket_empty" },
+		{ "bucket:bucket_water", "bucket:bucket_empty" },
 	}
 })
 minetest.register_craft( {
@@ -164,7 +165,8 @@ minetest.register_craft( {
 		"default:gravel",
 	},
 	replacements = {
-		{ "bucket:bucket_water", "bucket:bucket_empty" }
+		{ "bucket:bucket_river_water", "bucket:bucket_empty" },
+		{ "bucket:bucket_river_water", "bucket:bucket_empty" },
 	}
 })
 minetest.register_craft( {
@@ -182,7 +184,8 @@ minetest.register_craft( {
 		"default:gravel",
 	},
 	replacements = {
-		{ "bucket:bucket_water", "bucket:bucket_empty" }
+		{ "bucket:bucket_water", "bucket:bucket_empty" },
+		{ "bucket:bucket_river_water", "bucket:bucket_empty" },
 	}
 })
 
diff --git a/cylinder_tank.lua b/cylinder_tank.lua
index 04500dd..ab0c3d1 100644
--- a/cylinder_tank.lua
+++ b/cylinder_tank.lua
@@ -11,7 +11,7 @@ local function check_tank_foundation(bpos)
 	
 	local d = math.ceil(height / 5)
 	
-	return bitumen.check_foundation(
+	local ret = bitumen.check_foundation(
 		{x = bpos.x - 2, y = bpos.y - 1 - d, z = bpos.z - 2},
 		{x = bpos.x + 2, y = bpos.y - 2    , z = bpos.z + 2},
 		{
@@ -21,6 +21,25 @@ local function check_tank_foundation(bpos)
 			["bitumen:concrete"] = 1,
 		}
 	)
+	
+	if ret == true then 
+		return true 
+	end
+	
+	-- try for the steel foundation
+	ret = bitumen.check_foundation(
+		{x = bpos.x - 1, y = bpos.y - 1 - d, z = bpos.z - 1},
+		{x = bpos.x + 1, y = bpos.y - 1    , z = bpos.z + 1},
+		{ ["default:steelblock"] = 1 }
+	)
+	
+	if not ret then
+		return false
+	end
+	-- todo: check steel legs
+	
+	
+	return true
 end
 
 
diff --git a/fluids.lua b/fluids.lua
index 92d9f50..e19815a 100644
--- a/fluids.lua
+++ b/fluids.lua
@@ -131,7 +131,7 @@ local function register_fluid(modname, name, info)
 	
 	
 		
-	local soak = {
+	local default_soak = {
 		["default:cobble"] = 10,
 		["default:desert_cobble"] = 10,
 		["default:mossycobble"] = 9,
@@ -190,8 +190,10 @@ local function register_fluid(modname, name, info)
 	}
 
 	local soak_names = {}
+	local soak = {}
 	
 	if info.no_default_soak ~= true then
+		soak = default_soak
 		for n,_ in pairs(soak) do
 			table.insert(soak_names, n)
 		end
diff --git a/init.lua b/init.lua
index a4e405b..4b443ae 100644
--- a/init.lua
+++ b/init.lua
@@ -85,7 +85,7 @@ dofile(modpath.."/magic_nodes.lua")
 dofile(modpath.."/blueprints.lua")
 dofile(modpath.."/pipes.lua")
 dofile(modpath.."/burner.lua")
-dofile(modpath.."/pipeline.lua")
+--dofile(modpath.."/pipeline.lua")
 
 -- next core nodes
 dofile(modpath.."/fluids.lua")