im completely new to the hobby, and i spent sometime reading, about the cycle, and etc. and now i have a better idea how things actually work. I wanna have a nice planted tank, and im going to be in this hobby for at least 4-5 years. I used to own a 80 galloon back 5 years ago, but life been rough, and i had to leave the hobby till now. So yes i call myself now a complete beginner, because i literally forgot everything. so far i gathered some parts, 55 galloon, fluval 407 filter, and fluval plant 3.0 light. I was reading about the co2, and the importance of it in a planted tank, and i wanna do it right the first time. Iv been reading that theres 2 brands in the market. Gla vs co2art. Gla is kinda expensive. But i wanna know your thoughts?