liquid carbon dioxide

so i have a bubbler, which is a small 10 gallon fish tank with the plants in net pots with rockwool which is inserted in styrofoam and that is floating on top of the nutes with the net pots sit about 2 inches in the nutes i also have an air pump to supply the air to to roots...the plants are about 1 week old and right now i have 7 plants in hopes at least 1 is a female, in a small 4 foot by 4 foot closet and i wanted to know if i should use some liquid carbon dioxide to help promote the growth of my plants...i seen this on another website but they just mentioned it and di not go in to detail about the process and i was hoping that maybe someone here can helpme with this? if this is some thing i should do please tell me about the process on how i do this...thanks!

There are two easy ways to add CO2 to your grow project, one is nearly cost free, the other one costs about $120 to start but works like a champ.

Nearly free and in the GrowFAQ:
https://www.rollitup.org/view.php?pg=faq&cmd=article&id=286

This one costs money, but you just drop the resulting dry ice into a bowl in your grow room for C02 release:
https://www.rollitup.org/view.php?pg=faq&cmd=article&id=286

C02 release is best during the flowering stage though...so you don't need it right now. Right now, your plants are too small to need much C02. Plants do breath, they take C02 from the air and release 02 in its place. What you need to realize, is that in a closet or room, one tiny plant will not intake enough C02 to need you to introduce any. Everytime you check your PPM, ph, temp, etc....you breath enough C02 out for your plant. Once the plant is larger it requires more....and as you get to the flowering stage, adding C02 can increase your bud size (you will need a lot of light to photosynthesise all that C02 so don't skimp or you are wasting your time).

P.S. If you are using the dry ice method....DO NOT add the dry ice to your reservoir as it will kill your plant (roots need 02, the air the leaves breath use C02).

Also, Don't DWC in a fish tank unless you are willing to get a lot of algae. Water, plus light, plus nutes equals grossness that kills your girls. Use this link for a general idea of what you are trying to do:

https://www.rollitup.org/view.php?pg=faq&cmd=article&id=662

You may want to read up on the growfaq to understand the environment you are growing in:

https://www.rollitup.org/view.php?pg=faq

thanks for the input, i am going to check out the links you allhave posted for me to look at.

as far as the fish tank i forgot to tell you that i blacked out the sides so no light can get in...sorry that i did not say that before!

any other help i will be thankful for!