How Much will I get ?

I have a journal going and im in my 2nd week of flowering. I have 21 plants in a bubbleponics setup. Two 600w hps. I have 7 purp kush which are around a foot 1/2 and 13 snow caps which are monster around 2 1/2 feet so far and one master kush which is also around 2 and 1/2 feet. Budsites are every where plants seems healthy. Had some mite problems but they are under control now. So me being a first timer i was wondering if anyone could fill me in on harvest estimates ? Thanks for the help riu fam. Coulndt have made it this far without the help of others fourms.

So ideas ?

Heres the link to my other posting for pics..
https://www.rollitup.org/general-marijuana-growing/283098-my-first-grow-bubbleponics.html

about a joint.......lol

a big fat ass joint.....lol

Haha looking foward to this big joint then..

1800watts,If everything go's rite,should be 2lbs or more..

Yeah i was guessing around 1lb and some.. But wasnt to sure.. Im at least hoping for the 1lb mark tho. I would be happy with that..

Any more ideas ?

Its too hard to say. Too many factors. But a gen rule of thumb is 1/2 gram per watt

Buddy of mine said under a lb..