Wu's Autopot adventures 2 - Tangie Punch Fem by Growers Choice

[wutang]

thats interesting. i know we arent using the same nutes but with the veg mix of a and b i found my PH drifted a lot(im talking .5 per day), but with the air stone and pump it didnt drift as much, perhaps .4 over about a 5 day period. i would PH down to 5.8 and then repeat. but with the flower nutes a and b if ound i got much less ph swing but then again, i have never used the flower nutes without the air stone and pump.

I just thought of your comment about two hours ago as I was washing up lol

So I thought added an air stone or circulator increases the pH.. but your theory means it keeps it more stable...interesting...maybe I read wrong or for some it does and some it doesn't or reduces the swing

[Hmr81]

I'm not sure it's a theory lol, just my observations really. Without the air stone I find my veg mix goes from 5.8 when fresh to over 6.8 if I leave it for three days. Since I added the air stone it seems to stabilise. I think when I was pondering getting the air stone, GMO said something about the dissolved oxygen levels reducing and potentially causing the rise. I have no way of testing that obviously but since the air stone it's been much more stable.

[Hmr81]

I have the pump that's circulating the mix as well but in my head that just keeps everything mixed and stops it separating. No idea if that's true or bs

[wutang]

I have the pump that's circulating the mix as well but in my head that just keeps everything mixed and stops it separating. No idea if that's true or bs

Maybe bro science lol who knows. It's a game of trial and error I suppose

[wutang]

Oooooooo topped her....and increased lights to 40% power

[wutang]

I'm not sure it's a theory lol, just my observations really. Without the air stone I find my veg mix goes from 5.8 when fresh to over 6.8 if I leave it for three days. Since I added the air stone it seems to stabilise. I think when I was pondering getting the air stone, GMO said something about the dissolved oxygen levels reducing and potentially causing the rise. I have no way of testing that obviously but since the air stone it's been much more stable.

So I checked ph again and its still at 6.7ph. What I found in a previous grow and now this one, I'll have the drift and it settles like it has done now. So instead of ph6, this time I tried to get the fresh batch to ph 5.8, but went to 5.7ph. But that should hopefully settle it just below 6.5ph over a week or so. I'm only putting 10l in. Did you get similar behaviour?

[wutang]

So I haven't put my fresh batch into the res yet..I prepared it yesterday hoping that I'd put it in by now but there's still a bit left in the res. I didn't want to mix the old and new as the pH of the old is 6.7, but today I measured the fresh batch that was reading 5.7 yesterday and that's 6.0 today. So even more reason for the old solution to get to near as empty before I put this fresh batch in.

[wutang]

Day 41
Topped res up.
Res ec 6.7, nute ec 6 (from 5.7 two days after sitting in bucket)
total 6.2 after mix

[Hmr81]

roughly yes. I PH my Veg feed at 5.8 and after 5 days its about 6.4(at which point i ph down) but i did leave it as long at 8 days and the ph was close to 7.

[Hmr81]

but with the air stone & pump it seemed to settle about 6.2 after 5 days. i've popped a new seed so wont be long before im testing again