There are several ways to address excessive co2 and the skimmer line is one in the easiest and least expensive. Jesse (reeferintraining) has used a co2 reactor on his tank so maybe he will chime in with his experience with that method.
Jeff
The simplest way I’ve found when it’s cold outside is to just slightly crack a window in the fish room. That brings in just enough fresh air to keep me between 8 & 8.3. In the summer I push air out the window with a window fan.
As far as a CO2 scrubber, it brings with it other issues. When you have new media, it basically sucks all the CO2 out of the skimmer air intake. This then raises your ph but also your alk/Calc consumption. Requiring you to make adjustments to your dosing. Then when the media starts to get exhausted, your ph and consumption start to drop. Requiring more dosing corrections. It’s an up and down battle. There is also the long term potential problems of increased ph, consumption and growth bottoming out your nutrients.
All in all, the CO2 scrubber is too tedious for my liking.