<span class="link_user">@theNoyd</span>, Thanks! I have a TOPLANET 300W dimmable. I've read that in vagitation phase a neutral white or cold white light seems to be better ... I think I add some PHILIPS Bulbs and change/add the plant light in the flowering phase ... so much experiments :-/ even that with my granulate :D Good luck to you!
<span class="link_user">@howie03</span>, I use the VIPARSPECTRA V300 300W. I’m not sure on the growth effects but my seeds were over a year old if that might make a difference. I also had some issues with the mounting height of the light during veg stage I did 24” to top of plant. During flower stage I moved the light to 18” to top of plant.