Definitely not worth it! Yours plants can recieve the same C02 values if you exhale on them. Sounds silly, I know. But C02 is heavier than air so its always heading to the floor.
Your not watering these tabs into the soil are you? Roots use ZERO C02, only 02. The leaves are what take in the c02 and only when stomata are open. But like
@Budzbuddha said, ditch the tabs. Your not in a sealed space sonics really just a waste.
In order for c02 to be truly effective you need to very tightly control the VPD (vapor pressure deficit) and have PPFD sensors to adjust the light distance and by default, the DLI (daily light integral)
I make all my fertilizers from scratch and utilize a much different and advanced nutrient management approach. I'm 100% organic/veganic. However, I've used AN in the past with success but to the tune of $400 for the entire line. Crop was nice, but there's so much unanswered questions I had about the science of it all. That's what pushed me to study plant science and molecular antagonism.
Yes the AN does have the needed elements to bring out terpenes and enhance trichome production, with the exception of Magnesium hydrochloride. That would be a product known as snow storm ultra, made by Humboldt. I've used it yrs ago, and to be honest.... it was purely for bag appeal. It made manicure of the flowers so difficult from the scissors Gummi up and stuck shut. I had to have a bowl of everclear (195 proof alcohol) with 5 pairs of scissors in rotation.