Not Happy With yield please help!!!

How long have you been growing? How many grows do you have under your belt?

this is only my second harvest.

Dialing in things like when and how much to water, and when and how much to feed, is something that will come with experience. After a lot of trial and error, you'll settle into a schedule that works for you and your plants. One thing off the bat that I noticed, and it was mentioned before, go with bigger pots. 3-5 gallons as suggested. Get 5 gallon buckets and go with 3 gallons of soil which should give our plants some room to stretch. Post some pics of your plants as that will help determine if you're doing something wrong. I also think your temps are kind cool. I run at about 80-85* which allows the plants to transpire and drink what I'm feeding them.

ok my light is turning on soon...Ill get pics.... Im gonna go pick up some 5 gal squares tomorrow. Do you think the pots will make a significant difference, I was also considering switching to ebb and flow instead of getting bigger containers.

Try doing the same strain instead of different indicas and sativas---You will get an even canopy #1 you can try different nutes if you are seeing results you want. But by having the same strain or clones you can see which she responds to better---nutes/ ph etc...
3gal pot and 5 gal pot are supposed to yeild the same according to the Bible--but I think the bigger the root the bigger the canopy the bigger the flowers. I use 5 gal nursery pots and average about a 1/4 lb a plant but do not veg them taller the 20 inches. I do have some stuff 5 foot and expect 2lbs from a 5 gal pot dried cured and trimmed dispensery style.
But inside you need no bigger then 3 gal for dirt conserrvation space and nutes and water---no need-- your inside should not get that tall as the light wont get down far enough to finish the bottom and you end up with half baked little peanut size crap that is good for cooking I guess.
Trim the at the bottom for clones and top them for about four spears and no bigger then 20 inches and you will have fat tight ones.

a few things you can do to up your yeild is grow bushes, look into SCroG growing,...20 grams from a 3.5ft tall plant is pretty low...I get 1-2oz off of a plant with a 4ft 6 tube T8, which the factory claims its just shy of a 400w MH which i dont belive, but point being it's far less light than your 1000w HPS and I yeild quite a bit more.. If you dont have a problem with space and your growing in strait soil I would up the size of your pots, A MAIN factor many over look is the pure fact that your plants are only as healthy and large as your root sytems, your plants may be either root bound or just the small size of your root ball could be holding you back. Also you can top your plant at the 3rd-4th node and let the branches grow. Once the branches are about 6-8 inches long you can bend the tips over until they are facing the ground and leave them like this for about a week this will forc the newest shots on the braches to force new braches without topping the plant thus being a much quicker rebound and less down time...Once you notice the nodes on the branches shooting out and theyre about an inch you can let the tips up they'll go back to normal in a few days..Now that the new shoots are about the same height as the main tips they all become main colas using this and depending on strain your plant will create a bush with an even canopy and many bud sites.

You can also get some nutrients that are strickly for roots...advanced nutes makes voodoo juice, piranha, tarantula, and carboload (too feed the microbes) which would do good with fox farm nute which are mainly organic.. all of those are benificial fungi and microbes to stimulate root growth and can be bought in smaller portions due to them being a little expensive...but you would do fine with just voodoo juice..

One of the best things you can do is make your root systems bigger, this will make your plants grow faster and yeild bigger, thus the need for larger pots..other than that it boils down to the genetics of the plants your growing look for high indoor yeilders, pure power plant, northern lights, super silver haze, super lemon haze these plants have very high yeilds indoors and rediculous yeilds outdoors.. and giving your plants the best stress free enviroment you can

deff look into scrog I've seen a guy pull 1lb off of one LST'd plant with a 1000w light a rule of thumb is 1 gram per watt o you should be getting about 1000 grams advanced growers can get 2-3 grams a watt with the right plants

If you need any other info PM me I can help you out alot more and go into further detail if I had all the info on your grow,

Maybe you have choosen a bad way to do that!! Why don't you change it ?

check my grow im doing a 1000w first time