Dinafem roadrunner automatic seed from attitude seeds?

Does anyone know the best light time to use for this strain? I read in the description that 20 hours of light a day would reach its maximum potential but if always known auto flowering strains to pu put in 12/12 light... Can anyone help me?

Autoflowers are simple. Keep it in 20/4 for the entire life of the plant. That's it. Don't change it, don't turn it down to 18/6, don't do anything except 20/4. Some people say 24/0, but I think it's best the plants have a little bit of a rest, it keeps temps down for a little bit and it saves on electricity. Besides if the breeder says 20/4 why would you disagree with them?

That's what I thought but I wasn't sure... Thanks for the response...