Face planted IME with my 384 ½ Mazzei in a 90gal, there is absolutely no comparison between the two. The Mazzei's ph pulldown ability cannot be matched by a glass diffuser at ....least in my experience.

The difference between our setup is I am using a 384P w/ 1100gph@ 28ft head so I am able to provide more pressure flow which in turn mixes, disentegrates and dissolve co2 more efficiently.

Just wanted to clarify to the masses that a glass diffuser and Mazzei is not the same animal when Mazzei and pump is correctly matched