I'm a first time grower, can someone please help me!!

all i can say is that's exactly what im doing (like reg house plant status [only watering and pulling bugs off i see]) except i have 9 plants 3 from a friend because he couldn't grow them with his lights, a clone i cut (when is it considered one of my 15 maximum)and 5 flowering
i was told they look pretty good but might run out of nutriments in the soil so i need to read up on stuff like that
also i started from clones on 12/12 so you are doing better lol i totally forgot about veg

 

you should stop using tap water unless the PH is 6.5 and under. you can measure this with a ph meter, and use PH up and PH down nutrients for equalization. this can greatly affect growth. Also get some vegging nutrients. what kind of light are you using? and what kind of soil? keep the temp in your room between 70 and 80. and theres lpenty more you can do to increase yield, experiment with growth etc. but those are the basics

 

The neutral range is 6.5 - 7.0. below 6.5 is acidic.
Most blades use RO, though it's not necessary. I use tap that I bubble the chlorine off. Chlorine can stunt the growth.
Purer water is more of concern in hydro.

 

ideally the ph level doesnt want to go below 6.5, i usually advise between PH 6.5-6.7 as a good general level for soil grows(also a personal pref), but can varie a little depending on strain but always at around 6.5, also PH up & PH down are not [classed] as nutrients, they just adjust the water

@op as your growing an auto you could use a 24/0 lighting cycle, this can help to increase yeild with auto-flowering strains

also tap water is perfectly fine to use, but you need to leave it out uncovered for about 24 hours before use, as this lets the clorine etc out of the water(i think some1 mention they "bubble" the water, that also works)

 

Is that a genuine 100W or equivalent? e.g. 23W equivalent to 100W. (And I assume you mean a CFL.)
In this case you need to go by the actual wattage and not the higher equivalent.
About 100W for the first plant and 50W for each additinal one will work OK.

You want the light(s) 1" - 2" from the plant.

You could re-pot into larger pots now, if you wanted, or wait a little longer.

 

There is no specific pH of the water you input to your plants that is inherently "good" or "bad" or "right" or "wrong." What matters is the pH of your runoff, which you want to be in the range of 6.4-6.8 for MJ. If your runoff pH is higher than that range then you need to lower the pH of your input water -- regardless of where it's starting from. And if your runoff pH is too low then likewise you need to raise the pH of your input water.

Tap water could be OK, but everyone's tap water is different so there's no way to judge. You can filter your tap water and that should do a good job of removing solids and chemicals.

 

Don't help this kid... He's like 14 or 15 years old growing in mommy's guest bedroom closet behind her back. This is atleast the second forum account he has already made. Somebody needs to ban him.

 

No, I haven't burned in two months. Your just sad becauce I rained on your parade.. kid.
Get a clue and realize what your doing is so retarted. Your growing inside the guest bedroom closet. Do you even have odor control, let alone know what that is? You can't just spray Febreze. Your whole hallway or floor will reek come budding time. The only way mommy won't find out one day while your at school is if she's an alcoholic or drugged up and does not get off her ass for anything. Doesn't she clean the house or do you ever have people stay over? Don't forget your novel for sustained silent reading at your middle school and don't grow bud in your parent's house and stick to playing Runescape.

Lol. Your plant is better then mine yet... "I know NOTHING about growing" said the kid.