Any risk w/ co2 scrubber?

[SanFernandoValleyAIOReef]

I’ve been looking into to co2 scrubber for skimmer(not the recirculating) & wondering are there any risk/danger? Can’t seem to find any myself. Thanks! Also don’t have aquarium controller for ph

 

[blaxsun]

I’ve been looking into to co2 scrubber for skimmer(not the recirculating) & wondering are there any risk/danger? Can’t seem to find any myself. Thanks! Also don’t have aquarium controller for ph

Nope (to you or the tank).