Sorry had to twist first of the day. Kelp has hormones and growth sheet in it. I ran same strain last time as before with kelp this time and had bricks vs the other time when I thought I was getting sativaish buds.
Check it. 2 ltr bottle will not give roots room and plant will be small. 3 gallon will produce 2-6 ozs 5 gallon will do 4-10 oz etc. Pot size makes a difference unless doing SoG and you need atleast 1-2 gallon pots.
You could probably get more in the same space with a pot upgrade.
Side note you can use those eco cloth bags stores give or sell for a dollar. They work great and same as grow bags. #Cheap
Bathroom reading: