Actually I didnt...it started out as a SCROG grow, but then it started getting hard to change the nutrients...so I removed the screen, by then the plants were trained.
Haha, that's funny. I did the same thing but for different reasons.
Well yeah, it could just be a late bloomer. The calyxes always start to swell at the end. You could try a pk bloom booster. Lotta talk about the ethics of it, but they work pretty good.
Canna pk 13/14 is one off the top of my head, but a few companies have 13/14 bloom boosters. I've heard a lot of good things about Advanced Nutrients Overdrive. Pricey but the people that use it swear by it.
I wanna try this one sometime --->
http://www.hydroint.com/1bloomfinal.php
Word from a guy that's been growing for decades is that he's amazed by it. It swells up plants but not with water weight.
I myself used House and Garden's Shooting Powder and it worked wonders for swelling my buds.
EDIT: I see your already using pk 13/14 arent you you supposed to wait till the last few weeks to use that stuff?