Quote Originally Posted by Tupamaro
temp is usually in the 70's except at night it might be like lower 70's. they are northern lights and i'm using a 400 watt hps. 10/14 cycle. it was really hard to get them to flower. instead of 12 i had to go down to 10. and i give them bat guano with high p and low n and all. and i also give it some dolomite lime every once in a while too. it's probably been actually flowering for a little over a month now. but like i was saying both my other plants are harvested and everything. this plant has been a slow grower though so i don't know if maybe its just normal for it. i check the trichomes and they're not really mature yet. some are but maybe like 25%.
This is my best guess

the ideal temp is 78 and the best range is 75-85. so your a little cool, which will slow growth a tiny bit

Bat guano actually is very high in N and P. High levels on N can delay and retard flowering. i find it strange that you had to drop the light cycle down to 10/14 to get it to flower

I think your problem is light leaks, that would explain both slow bud growth. As the flowering hormone is inhibited by light, so if you got light = less hormone = less bud. it seems to me that you compensated for this by increasing the dark cycle. cutting the two hours out will also reduce yield and i have never heard of a strain needing that to flower. I dont think natural days ever get that short (in most places).

My best advice is check for light leaks.