CO2 Pad

Nah, bad idea. Bags and other such gadgets producing CO₂ day and night, in small quantities, and if you don't cut your extraction, are sucked outwards before they reach the plants. You should concentrate on your growing skills before thinking about CO₂ intake. ^^

There's no way these can raise ambient co2 to 1300 in your tent in any common sense context. MAybe lining the entire surface of tent and misting it all could? from what i read on a user review, someone's co2 meter barely registered any change.

Co2 does not add much if you do not grow everything on full power. It increases the yield when you grow with a 600 watt or stronger lamp and got the nutritions and everything else near perfection. Next to that you can only use Co2 when your system is close. So when you exhaust your air inside the tent with a fan it does not make sense to use it.

The ambient air CO2 is enough. You won't see any major benefit in CO2 injection unless you up your temps and nutrients. And in order to be effective you really need to have the environment controlled via a CO2 monitor and have that be what triggers your space exhaust. Otherwise when your fan kicks on to maintain temp and humidity it will ignore the CO2 levels and render it far less effective and essentially a waste of money. The items like mushroom bags and pads have been shown to provide no benefit to any significant increase in CO2 levels in your space. Save your money. Keep your temps and humidity, and nutrient feed regiment, and you will achieve a harvest you will be pleased with.

don't you use an exhaust fan? in my opinion those bags are useless, the moment it's released from the bag, it almost already out again out of the tent because the exhaust fan will move the air way too quick out of the tent again.