Bought a new home; not sure the septic tank has ever been pumped

[Gale Hawkins]

I've read that using sodium percarbonate (oxy clean) is actually good for your septic as it adds oxygen to the water which helps break down solids in the system as opposed to regular bleach which is bad for the system.

They sell a system at pumps air to the solids at the bottom but not sure how that helps the anaerobic organisms?