Hey guys and gals.
So I decided to set-up some DIY CO2 for my grow room. I really don't know if it will make much of a difference but Ill have to try it out if I want to get the 1 gram per watt I'm looking for.
So the tools I used are:
5m of 5mm plastic tubing, 3 x 5mm 'T' pieces, black duct tape, 5mm valve, 2 litre plastic milk carton, a craft knife and some super-glue.
Altogether everything was very cheap.
5M of 5mm tubing : $5
5mm glands : $3
Package of 5mm 'T': $3
Turbo Yeast : $4
For the fermentation process I filled the 2 litre milk carton with 1 litre of water. I added 8 large spoons of sugar and 1 large spoon of Turbo Yeast.
I only added 1 litre of water to be safe as I don't want liquid travelling up the 5mm tubing. I will measure where the bubbles stop in the carton. I will then know where to fill to for the next time.
So I'll be changing the water each week to keep the CO2 process, hopefully, at a constant. I will also give the milk carton a good shake each morning and during the day. The amount of yeast in the package was rated at 21 litres so I divided the yeast into 8 equal parts to use each week. There is far more yeast in each litre (2x) than specified for the creation of alcohol, however, I don't want to make alcohol, I want CO2.
Hopefully this minor, inexpensive, effort will give a 20 - 25% increase in the final yield. If not it was fun putting it all together anyway.
The milk carton is on the floor and the tubing is attached to the roof of the tent. The 4 tubes, one for each plant, then run down the CFL's cables to the top of the plants.
I will be checking the valve to fins the correct degree of CO2 release without the milk carton exploding ! I really don't know what will come of this. I always keep my extraction fan on so this may be a bit of trouble. Unfortunately it is summer here and the air outside the tent is at 22 degrees. The tent reaches 29-30 degrees when the lights are on. I can't turn off the extractor, I can only slow it down. The plastic tubes hang right down to the plants so the CO2 will get there, I just don't know for how long.
However, if I manage to get the 1GPW I will certainly be doing it again !
Take Care All