If you have ant, gnat or roach problems, (or any other bug) I'd avoid spraying your growroom with anything sugary.

When you spray with tonic water, seltzer water, carbon dioixide concoctions...or anything else made with sugar, the overspray dries to a nice crust on you panda film, walls, bulbs, pots... (can scratch the plastic trying to clean it)
If overused, (or not gently rinsed-off with properly ph'd water) the sugars and other crap in the water can clog the pores in the leaves.

Vegging longer in larger pots will (if raised properly) increase yield.

Never used CO2, so no personal insight there. But I'd learn to walk before attempting to run. :jointsmile:
Rusty Trichome Reviewed by Rusty Trichome on . Please help anyone Hi can anyone tell me if the size of a plants container will affect its end yield. I currently use 13cm by 13cm pots, vegging for 3 to 4 weeks and getting a end result dry of around 20 grams average. If i use a bigger pot will my end yield increase. Also has anyone else heard about using a sprayer with normal fizzy water in to spray on plants and that puts loads of Co2 in the room. Just heard of it as a cheap method. Chris Rating: 5