I can’t be the only one with a poorly designed black tank.

enblethen wrote:
I doubt whether you are getting rid of solids in the tank.
Something like Drainbo this or similar products to truly breakdown septic tank solids may work.
You will have to fill tank to at least half to get it to work.

Thanks, but filling the tank even 1/2 way wont get the liquid to “rise” into the shelf area of the tank. But i do understand what you’re saying. Maybe i need fill the tank with water and draino like product and let it sit?