Here is a pic, (the only one I got) of the biggest plant. That plants' cola weighed in at 28 grams and it had lots of side buds as well, the plant that was behind it barely grew at all. Most of the yield came from 4 of the bigger plants.
Untitled-5.jpg

root space looks like your answer.

growem green---------------spike.

So you think one 45 liter tank per 4 plants is too little? Or I should grow smaller plants, that is what I am planning to do next grow. Maybe veg for one week only.

hi respawned .
give smaller plants ago and see how you get on, i tryed 3 plants in a 25ltr with my early set up and got the same results as your self.

do you know what your rez temps have bin sitting at?

growem green------------spike.

The res temps have been quite cool, around 16 to 18 deg celsius.
I did notice the roots were only growing along the sides where the long air stones were placed, with no growth in the center, so I think adding more air stones will allow for more roots to grow. But I am definitely going to keep my plants smaller from now on.
Thanks for the advice.

You only vegged for two weeks u nute burned and u probably didn't flower long enough...u must not be that smart because every guide on this site says something about those things and you listed them all... Try search pls

Thanks for the input I vegged for two weeks in the bubbler and the plants were already 8 inches tall so there was no need to veg for longer, as it is the plants got too big. I did flower long enough, 9 weeks, about 10% amber trichomes. I burnt the plants twice with nute burn, once by accident (yeah it happens and this is my first bubbler) and once when my pump broke.

If you dont have anything usefull to say rather dont say anything.

8 inches isnt much
id say 12 at least to start blooming

Need pictures to see what's wrong but I'm guessing you had your 400w lights a little too far away or something like that. But... If you have high electric costs a 600 or 1kw light would pay for itself instantly in both electric savings and mucho higher yield every single run. (Well a 1k would be slightly higher electic but so very worth the little difference from two 400's.)


400's just don't have the power to create weight like the larger lights. Two 400's burn way more power than one 600 but will always yield way less than a 600. Ditch the little lights and next time just post a journal with pictures along the way so we can advise as you go too.

__________________
Bukkake Bud: It might taste like splooge but shoots smiles all over your face.
When you'll suck on just about anything~think Bukkake.

They could have been a bit bigger, cant remember exactly and I never really measure but I know that they grew big, at least 26 inches tall. I'll attach the pic again, that bud alone was 12 inches long which is why I dont think vegging time was my problem here. Untitled-5.jpg