BigD first I want to commend you for your efforts and ingenuity....
but...
I can see how much trouble you are having starting from seed in just one cab... I know your intention was to keep it simple in one cab... but I can't just sit here and read about all your hard work knowing that you could be happier applying your hard work and getting a great reward for it..... if you just had one more cab... I simpler cab. Just a couple cfls, passive intake, small fan exhaust.. no filter needed.
If you can..... Get a second cab going with one clone mother, and a simple clone bobble tub.
Take clippings of your mother, put them in your bobbler with a drop of superthrive. As soon as your clones have descent roots, simply transplant them in your cups.
No more waiting for seeds to sprout
No more messing with rockwool
No more waiting to see if they are girls or males
No more MALES!
By the time the clones have roots, they will also have a descent veg time to them which means bigger buds
Still have your perpetual mini sog
Best of all, you can get started on the mother/clone cab, and keep your current cab going.... as soon as you have clones from the mother/clone cab... simply start introducing them to your flowering cab, and before you know it... your whole system will be in gear with less effort and frustration.
Just a suggestion..... =]