m = peripherals.wrap("back")
t = peripherals.wrap("bottom")

function drawCol(m,x, y, height, width, color)
    bgColor = m.getBackgroundColor()
    for i = x, (width + x) do
    	for j = y, (height - y) do
    		m.setCursorPos(i,j)
        	m.setBackgroundColor(color)
        	m.write(" ")
    	end
    end
    m.setBackgroundColor(bgColor)
end

while true do
	m.clear()
	tank = t.callRemote("mekanism:dynamic_valve_0", "tanks")
	amount = tank["amount"]
	p = (amount/1728000)*100
	p = math.floor(p)
	drawCol(m, 2, 5, 10, 3, colors.brown)
	os.sleep(1)
end