<span class="link_user">@IrishAutogrow</span>, yep ! always down to light and also the dark period is very important, same with temperature and temperature at night, also genetics , hope this helps :rocket:
Thank you @@Darkwarsongs for your comment. The last yield I got was around 50g from one plant which I was somewhat happy with but it was just that the buds where airy and not dense:persevere:.
Is this still down to light?
Thank you @@Athos..
I've a carbon filter setup to eliminate the inevitable smell.
In the long run, does negative pressure have any benifts or impacts to my overall harvest?
I found from my last harvest had airy buds and wondered if the negative pressure would have prevented it...
![Grapefruit [Day 62 - Coco - 7L pots]](https://bucket.growdiaries.com/static/report/photo/4786/706cd00b56ea8b1bf6f485cfddee8f27_450.jpg)
