grow info for 4'' plants in soil indoors

well my plants are 4 inches tall and looking real good nice and green i have been checking my soil for bugs none yet i have 3 pants growing under 2 (300w) bulbs each light puts out 4200 lumenes so i have total 8400 lumenes in my room my temp is 76 deg and humity is 62% when can i use my nutes ??again my plants are only 4 inches tall and looking good!! am i doing all this right guys???but i still need the mylar i dont want to do more than 8 plants at a time so??

Pics would help. How old are they? And nutes is kinda a personal thing. Everyone starts at diff times. Depending on ur soil too. It's not prefert soil is it? Personally if my plant is growing fine i dont touch it. But some people like to feed it the whole way. A few weeks in is a fine time to start nutes bro. I dont remember the time exactly but i know ur seed has the stuff it needs for a week or so i do believe. IF that makes anysense lol. IM a little high

begin feeding your plants at 4 weeks old...with a 1/4 strength dose of grow fert, working your way up to full strength...

how often should i water soil plants weekly?? i have organic soil and a 600w bulb

you should water everytime your soil is dry on the top. you can also put a pointy ob ject or a key to check. remeber never overwater. your plants roots will rot from lack of O2

so about like monday wendsday friday type deal??? i was going to use a 1 gallon milk jug with alaskan brand fish fertalizer oh how can i tell how much water each time to give them when it floods to the top and then drains down ????

the amount they use depends on the size, the strain, and the heat in the room. as they are older they may take a gallon a day. when they are young they may only need a gallon or less every week. ferts are usally once every 2-3 watering's for most people, each strain likes it a different way. keep a journal and keep cloning so you know exactly what you need. personally i would check it 3 days after you water and see how the soil is, when the pot feels light water it. if you have good drainage the soil will drain before overwatering hurts it. a real heavy flush onces a month is good for clearing salts and excess from the soil. as well as straight water at the end with about 2-3 weeks to go. dont water the last few days before harvest. the plant will use what it has stored so you get a smoother smoke and less curing time.

what do you mean a good flush?? how often???