When I cleaned my DE filter recently and reassembled it, I noticed a drip-drip leak from the drain plug at the bottom. The filter tank has a plastic cap with a small O-ring in it. I tightened it all I dare with water pump pliers, but it still drips.
I just recharged the system with DE after end-of-the-season flushing of the filter screens, so I hate to have to break the whole filter down again and put another 12# of DE back into the system.
Here’s my question. Before I can take the cap off the drain, I have to relieve the pressure in the tank, let the water in the tank flow back into my drain system, and then when I remove the plug, I expect to lose some/most? of my DE material that will be in the very bottom of the filter tank below the lowest plumbing connection to my pump. I have no way to capture what comes out because the drain is only about 2” off the ground. How will I know how much DE to replace when I get the plug back on and the leak repaired?? Is there any way to estimate how much DE to put back in?
I plan to use teflon tape, be sure and clean the threads, and make sure the O-ring is not crushed. If so, I’ll replace it.
Thanks for any advice on how to recharge.