ParaZapper does kill algae but NOT just algae. It kills bacteria, protozoa, fungi, and other microbes. The water test is proof that it can do this while the BBBE does not. Microscopic examination shows that ParaZapper was successful in killing all of these microbes, not just algae that you try to mislead people into believing.
ParaZapper includes not only the Beck frequency ( very exact, not crude like yours ) as well as Clark, Rife, and Crane. So, yes, because it contains both 3.915 Hz and 4.00 Hz, ParaZapper qualifies as Beck.