What do I have here

Good day gang, hope everyone is fantastic today. Not sure the best way to search this (red growth?) but can anyone help what I have here? Running promix + GG + EWC and teas. D50 and the plants are pretty darn healthy. So I am not worried but more curious what the heck this is. Thanks gang as always for the great intel.

Kinda looks like a build up of calcium?

I know we usually think of calcium being white, but I get the same reddish brown, impossible to rinse off build up on my smart pots too.

youraveragehorticulturist said:

Kinda looks like a build up of calcium?

I know we usually think of calcium being white, but I get the same reddish brown, impossible to rinse off build up on my smart pots too.

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I thought it was my bat guano sh*tty brown stuff

I wouldn't sweat it too much. Here's one of my pots after flowering. It probably could use a wash.. but I'm not tripping about it

A little off topic.
Are those rain science grow bags?
If so, how are they?
I’ve been using ac infinity fabric pots and have been thinking about the switch. @thctimmy

CaliRootz88 said:

A little off topic.
Are those rain science grow bags?
If so, how are they?
I’ve been using ac infinity fabric pots and have been thinking about the switch. @thctimmy

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Whats wrong with the AC ones? only asking because I just ordered some. What intel do you have on them lol?

RIS said:

Whats wrong with the AC ones? only asking because I just ordered some. What intel do you have on them lol?

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I love the ac infinity bags. I’ve used others and ac seems to a bit thicker. The rain science bags seem tougher and easier to machine wash. But not sure. I’ve used my ac fabric pots for 4 runs now and they’re still in good shape

CaliRootz88 said:

A little off topic.
Are those rain science grow bags?
If so, how are they?
I’ve been using ac infinity fabric pots and have been thinking about the switch. @thctimmy

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They are, and I love them. Haven't used AC Infinity. But have used other brands probably cheap amazon crap. these are sturdy and made in the USA. I recommend.