Thanks for all of the advice.
I have a couple of pix of the setup and the plants, and I will try to summarise what I do-
I used a bag of soil compost with vermiculite and perlite added (didn't really know the right proportions) and put them in small clay pots. Planted one seed in each pot, 4 pots total, and all sprouted within a week.
At first, my light was crap and the plants were just growing tall thin stems then I got a bunch of blue and red wavelength cfls and they started to bush out and develop. I now have about a total of 650 watts of cfl lights in the small 80 x80 x 170 cm grow tent. (250 watt red, 125 watt blue, plus 9 30 to 35 watt 6400 and 2700K cfl bulbs in total)
Looks like a nice set-up you got there, the two things that jumped out at me were the Miracle Grow and possibly too much of it. that stuff is really hot and will murder plants (I've killed a few things with it)
They are in a grow tent with 20/4 light cycle with an extractor fan and filter setup and a small oscillating fan for moving the air and plants and the temp is about 25-30 C when the lights are on and down to about 20 C when the lights are out.
I fed them a fertilizer in water for the vegetating stage at first and after they were flowering, I switched to a fertilizer in the water for blooming/flowers.
I use the ratios for mixing in with the water so that they are fed whenever they get water.
I wait until the soil on the top is dry before soaking them and draining them with the water, and only occasionally do I mist their leaves, sometimes with plain water and sometimes with the fertilizer water (read different opinions on this).
I used miracle grow at first and then switched to a high nitrogen feed. When the buds began to appear, I switched to a high potash feed, but then switched to Canna terra flores and also added some phosphorus plus.
I diluted it in the water and water them when the topsoil is dry down to my first knuckle.
They seem to need watering about every day as the soil seems to dry out quicker in the small pots.
There is a fair variation of leaves in both color and in slight imperfections such as dry tips, yellowing (?) tips, leaves of different shades or colors, and odd little curls on leaf ends on some leaves.
They were planted on sept 12, sprouted about sept 16, and started to show buds about october 15. They are about 12 inches, 9 inches high at the moment, in 5-6 inch pots.
I had a crap ph meter stick that was all wrong. I bought a better meter and calibrated it and discovered that my tap water is about 7.5.
I immediately started using ph down to bring the tap water with the nutrients in it down to 6.5-6.7 and used that.
Then I read that you should only change the ph very gradually- so there's yet another mistake that I made raising my first crop. (This is like raising children- you always mess up the first few until you start to understand the little rug rats, but you always love them. Still, I don't want to love them to death.)
Could the sudden ph change account for any of the leaf problems?
Is there anything I can do to alter their nutrients at this point to help them out? Is the soil so saturated with old nutrients that I should just use water for the time being?
I also see that the largest fan leaves- they have no buds on their stems- tend to turn lighter green while the small leaves around the buds are darker green.
The large fan leaves are covering several bud sites.
Should I be cutting away the large leaves to expose the small leaves and buds to more light, or are the leaves important for the plant's health and photosynthesis?
Thanks for any advice. This seems like a very helpful forum.