I have been using led lights for growing plants , even in 2ft deep tanks , since they became available a few years ago .
The get around the spectrum issue by using arrays of different colours , with that they can be mixed to create any spectrum required .
Good led lights are not cheap but work very well , I used to use halides leds now can very nearly match them .
I currently use Kessils or Fluval lights for CO2 tanks . I have used the cheap Chinese ones with some degree of success in low to medium light tanks but I moved away from them . I now have only one tank running . and due to health issues will be shutting it down soon . It is a 24 x 18 x 24 inch co2 +ferts type planted tank , On that I run 2 kessil 150 amazon suns and a 160 Tuna Sun . they will grow japanese hair grass well at a 2 ft depth .
Leds from Bunnings etc may work , you would only find out by experimentation , I am pretty much over that and just buy ones that I know work .
I am old and it just is not worth my time and aggravation to find out , only to have bunnings change supplier and find the new one next to useless .
but for some half the fun is in the experimentation .