local lamps = {
    [1] = peripheral.wrap("glowstone_illuminator_0"),
    [2] = peripheral.wrap("glowstone_illuminator_1"),
    [3] = peripheral.wrap("glowstone_illuminator_2"),
    [4] = peripheral.wrap("glowstone_illuminator_3"),
    [5] = peripheral.wrap("glowstone_illuminator_4"),
    [6] = peripheral.wrap("glowstone_illuminator_5"),
    [7] = peripheral.wrap("glowstone_illuminator_7"),
    [8] = peripheral.wrap("glowstone_illuminator_8"),
    [9] = peripheral.wrap("glowstone_illuminator_9"),
    [10] = peripheral.wrap("glowstone_illuminator_10")
}
local tank = peripheral.wrap("back")
local tankinfo = tank.getTanks("unknown")
--print(textutils.serialize(tankinfo))
local percentage = tankinfo[1].amount / tankinfo[1].capacity * 100
for key,value in pairs(lamps) do
    value.setColor(0x000000)
end

while true do
    for i=1,10,1 do
        lamp = lamps[i]
        if (percentage > ((i - 1) * 10)) then
            lamp.setColor(0xFF0000)
        else
            lamp.setColor(0xFFFFFF)
        end
    end
    print(percentage)
    os.sleep(1)

    tankinfo = tank.getTanks("unknown")
    percentage = tankinfo[1].amount / tankinfo[1].capacity * 100

end