How To Unclog A Drain When You Have A Septic System. Use high doses of lye caustic soda or 35% or higher hydrogen peroxide. Here are some ways you can try to unclog your drain or septic tank on your own:
If you have a clog in your drain, one of the easiest methods you can use to try to remove it is pour hot water down the drain. Clogs made by solid waste or greasy substances to roots can be removed by a drain snake or water jetters. This technique is better done by expert plumbers.
The membrane prevents soil or dirt from slipping between the crushed stones and blocking the leaching bed.
About 1 to 3 inches of crushed stone should do the trick…. If hot water does not work, the next method you can try is a mixture of baking soda and vinegar. Boil a pot of water and pour it down the drain. Just so, how do you unclog a septic tank?