Yellow leafs with the brown spots@8 weeks auto

Grow Support Autoflowers
41

Not sure if it matters but i switched from purified water to ro water, iam thinking thats when these yellow leafs started 2 feeds and one ph-ed water with ro, they just got worse after this last feed (yesterday)

1 Like
42

How long have these been flowering?

43

Wait, wait, wait a damn second…you fed pure/plain RO water and you PH’d it?

44

4 going on 5 weeks

45

Yes , straight ro with some cal mag

46

Whenever you feed with R/O water only you don’t have to PH it. There is not enough ppm’s to hold a consistent ph. So that might have messed with your root zone.

1 Like
47

Dont overreact… when was the last feed before yesterday?

48

Last Saturday. Watered Tuesday night

49

Got any worse? Dont sound like overwatering… maybe her ppms just dropped like hell between the feed, water, feed

50

Was thinking of flushing when they dry out , should i stay with the ro water or go back to purified?

51

Seems to have stop spreading ,3 out of 4 plants have it

52

Its not spreading plant to plant. Yellow leaves on 3 outta 4 pretty much means u boinkd something. U want it to stop spreading period (plant by plant). Usually when u fix something it takes a second to show. If u flushd n left em hungry a week. Then thats why the yellowing

1 Like
53

What do u think , should i flush, or just water as normal

20190903_065158
20190903_065158816×612 339 KB

2 Likes
54

Ur approaching the end. Dont rob her of nutes (flush) let her rock on. How long since pistils?

57

Still looks like two weeks minimal… when was last water n last feed? N did u take runoffs? It should be falling each watering

58

i fed Saturday, watered Tuesday before, and fed Saturday before thatlast feed went in at 6.7 came out 6.2 went in at 970ish ppm came out 1070ish ppm, i watered with ro water and cal mag on Tuesday but ph it, sick kid said j could have messed it then because ro water wont hold ph

59

I recently switched from purified to ro ,only the second feed with ro , and that one watering

60

Thinking i might go back to purified

61

U can run ro but like stated. Dont ph it

So. 8/24 u fed - runoff ???
8/27 u waterd - runoff ???
8/31 u fed - runoff ~1000
Today when u water (of she needs it) check runoff. U want the ph and ppm of the ro water going in and the runoff coming out

1 Like
62

8-24 ,run off was at 6.2 still and 1100ppm, i didn’t check the run from the straight watering