Quote Originally Posted by pentachris View Post
I bought some DE powder today. I put 2 cups in the skimmer, and about 15-30 seconds later, there were plumes of white pouring from the outlets. I also tested the CH level today, and it measured ~800.

So, regarding the filter: Is it worth it to try the "sand revitalizer" stuff?
If DE blows through the filter, I can think of 3 possible causes:

1. There's not enough sand OR it's not filter sand (too coarse).

2. There are CHANNELS in the sand, that allow the water to bypass most of the sand -- can happen if the sand gets gummed up.

3. There is something wrong with the structure of the filter; in the case of DE bypassing, a misplaced air relief line can do it.


BUT . . . all of these problems can only be fixed by opening the filter.