Feb 14, 2014 #1 F flash2121 Aquarium Advice Regular Joined Dec 31, 2013 Messages 54 Can I use just any silicone on a DIY co2 to seal the caps for it
Feb 14, 2014 #2 Abe86 Aquarium Advice Activist Joined Apr 15, 2013 Messages 188 I don't think so. Use aquarium safe ones. Better safe than sorry.