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Weird Perlite problem

Posted: Wed Apr 28, 2021 6:07 pm
by Darkroom Denizen
I'm using perlite as a top dressing for my ping cause I thought it would look nice. I've only had it there for about a week and now the tops of all the perlite are turning brown. The bottoms are perfectly white. I use peat/perlite/sand mix under it.
20210428_140156.jpg
20210428_140156.jpg (2.87 MiB) Viewed 3120 times
Anyone know what's going on? Am I going to need a different top dressing?

Re: Weird Perlite problem

Posted: Wed Apr 28, 2021 6:12 pm
by Matt
I believe that's just the tannins in the peat being sucked up into the perlite and causing it to become brown in color.

Re: Weird Perlite problem

Posted: Wed Apr 28, 2021 6:38 pm
by Panman
Yep. The perlite gets stained from the peat tea.