Are there any specific conditions (dive profile) for using CCR? Mark answers this question and plenty of others in this weeks #askmark!

New Dive Gear April 2021 | The Dive Brief

https://www.simplyscuba.com is the UK's best-loved online dive store with over 60 of your favourite diving brands and manufacturers.

We have been voted the UK's top dive retailer for the last 10 years which we're pretty proud about as we always strive to find you the best deals, give in-depth product reviews and help you find the right gear for you so head over