BIG PROBLEM(s)!!!

Here`s the deal.
I`m using an MH light of 400W / 12h / day and the temp is around 26 degrees Celcius and in the other 12h i use 70W light from 2 neos and the temp is at about 20 degrees Celcius.
It`s not just me beeing paranoid but i`m wondering if the plants could interpret this as day/night and go into floworing.
Also, i am thinking about using some fertilizer ... do the plants seem strong enough?
One more thing.The bottom leafes are drying out and the plants have there leaves down ... I water them one a week ... but when i do i put water in until it come thought the back of the container. Am i over watering?
Peace!

Chill a little. Why are you using the MH for 12 hours insted of 18 if you don't want them to flower yet. Both under watering and over watering can cause stress. Maybe a moisture meter would help. If yu haven't used any nutrients yet then you must have some pretty good siol. Did the bag say how long the nutrients would last? Teh only reason you want to water until it runs out the back is if you want to flush the medium because you have some kind of a nutrient problem. You can try and fix it by guess or just flush it all out and start over with proper nutreints. Hope this helps you some. I think your plants look decent. Loss of lower foilage is pretty normal.

I never used nutrients. The soil is regular soil with 6,5 Ph.
I cannot leave the light opened for 18 hours because i`m not home, and the land lord can come at any moment (that would suck ).
How must i water them then?
Please tell me

The plants need 18 hours of light per day, switch to 12 hours of light to induce flowering. If you are just giving it 12 hours all the way through how do you hope to get bud?

for starters get the water away from your ballast. like right now! lol dude, you are going to start a fire. plants can only absorb 18 max light prer day. anytihng more is just over kill. you can use 14-18 hours for vegging. some swear by 24 hours of light but all the material I have one all plants say 18 hours is the max. if you are afraid of having the lights on more than 12 hours at a time, you might want to consider moving your grow to another area or just up the lighting hours. that would be the easiest way.
you water when you think the soil needs it, reads widow makers grow for more info if I repeat I would just be beating a dead horse.
you need to get nutes for your trees. eventually they will use all the nutes that was in the soil and die. if you would like a cheap place to get nutes drop me a line and we could find some for you no matter where you are.
I don;t like the fact that your landlord can drop by whenever he wants. what happens when you are getting some nookie and he comes by. he should have to call first. you should talk to him about this. anymore questions feel free to ask away

just a thought but what are you going to do when they start to flower and they smell ?