Mares Proton XL and Nitrox

[Big Blue One]

... I know the manual says absolutely no Nitrox but another thread everyone says nitrox on the Mares is fine if you obey the <40% rule.

Anyone got an idea / experience on the Proton XL combo ?

 

[Big-t-2538]

The manual says that so mares can cover their butts if something happens...go ahead and use it for less than 40%...if you do go greater, get it cleaned.