Hi All, I back washed my mechanical filter for the first time and not much came out? 5000 gallon pond the filter is rated to 10,000 (bought one knowing needed new larger pond.)
No smell at all? I have a 1/3 HP pump and plenty of umph. Water tests ok
1:00 AM eastern,
0 ammonia
0 nitrites
14ppm TA
20ppm nitrate
150 TH
8.5 PH
.22 salt (Will add more tomorrow)
ORP came last week have been too busy to study the manual

to use properly so I don't stick the whole thing in the pond and ruin it.

It's beautiful I ended up getting a JUMO with orp and Ph probes.
Thank you, and I truly appreciate your help and patience Lori (I'm getting IT!)