Were can i buy bottled c02 for my indoor plants? how can i hang on to plants thaw out surrounded by crypt? im growing indoor because its still kinda cold outside were i...

im growing indoor because its still kinda cold outside were i live

Answers: Are you kid? CO2 is found in adjectives air surrounded by plentiful supply, especially in a underground room. No need to supplement. The entry that indoor plants need most is sensible watering (not too much or too little) and weak fertilizer.