no hormone. people say its useless in a bubbler cause it just washes away.did you use any rooting hormone? Leave them there, only until they actually die off is it failed.
...marijuana's middle name is patience. You're clones look quite healthy, but also on the large side - I'm a noob to the site, but I've had near 100% sucsess with cloning stuff like Sensi's and Durban's in a homemade rooting machine. I cut my clones alot shorter than that - the more mature your stock is for a clone, the longer, and more difficult it may be for it to take root. ... just my two cents.Just give them time. Rooting times for clones is strain specific.