In this episode we talk about water changes, cookies, and Ask Reef Beef. Thank you to our sponsor: https://www.SaltwaterAquarium.com?aff=20 The Veterans, Military, and Civil Service Discount program is now Open to Healthcare Workers. - https://www.saltwateraquarium.com/military-civil-servant-5-discount/?aff=20 Their loyalty program includes 5% Back via Reward points and Freebies https://www.saltwateraquarium.com/free-stuff.html?aff=20 Links: Gas Exchange at surface: https://www.intechopen.com/chapters/45239 Get notified of new episodes by receiving an email from Reef Beef! https://reefbeefpodcast.com/notify/ Buy Reef Beef a Beer! https://reefbeefpodcast.com Become a Member: https://reefbeefpodcast.com/membership