ProMix... Is it considered hydroponics or soil gardening?

max316420 said:
Ok so this might sound like a stupid question coming from someone thats been growing for over 15 years and has been using promix for about 12 of those years but when ph'ing water for use with promix, should you consider it hydro ph range or soil ph range.. I use AN sensi bloom thats supposed to keep "ph perfect" but its dropping my ph down to 4.3 and i totally overlooked it and lockout set in and i got some yellowing in my fan leaves, but i figured out quickly that my ph was to low but im wondering if I should ph it to around 6.5 (soil) or around 5.8-6.0 (hydro)? Ive been using promix for so long but never truly knew the answer to this question lol And i know this isnt really a "advanced" cultivation question but the growers that i want to hear from usually are the ones in this section.. thanks in advance
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its a little of both lol I think its the best of both worlds hydro results with a little buffer
 
max316420 said:
ok so what ph do you guys that use promix ph your nutrient solution to? I had to take a 3 year break from gardening and ran into a yellowing issue in early to mid bloom.. Dont wanna run into this issue again.. Ive been ph'ing my solution to 6.5 after i tested my solution and found out i had fed at least 8-10 with fucked up ph nutrient solution... ps.... advanced nutrients ph perfect is not ph perfect, takes my nutrient solution down to 4.5... Ive quickly learned not to become to comfortable because when you do, you forget stuff and that can ruin a whole crop. I was to comfortable and totally forgot to test my ph, easy mistake that i completely overlooked
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I ph my nute solution for promix between 6.1 and 6.4.

I also use the AN ph perfect line. It is meant for RO water... when you use RO water the ph perfect line it actually works very well.

If your ph is ending up at 4.5 then your water must be starting out at a very low ph. My water comes out at the tap at about 6.8 to 7.5 usually, depending on time of year. After i add my nutes i usually end up around 6.5ish... then i bring it down a bit.
 
Roger A. Shrubber said:
i've used pro mix for a while, and if you stay at 5.8 it's going to be too low, you need to center around 6.3, dropping down to 6.0 occasionally, rising to 6.5 occasionally, but always returning to 6.3
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I run promix always, top dress with my mixed ferts...my water is always 5.9ph going in...been that way forever and it's perfect for me.
 
18B said:
I run promix always, top dress with my mixed ferts...my water is always 5.9ph going in...been that way forever and it's perfect for me.
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u no I have been using promix since late 80s, have used all kinds of water stream, swamp, pond, rain, well, never have I tested the ph always get good results the only ph testing I do is on my fish tank the buffer is built into it good for about 100 days
 
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maybe it's more forgiving than we think. if 5.9 works for you, use it, 6.3 has been working for me, maybe anything between the two would be good, just don't know, maybe i'll experiment a little when i have some more set aside
 
I’ve been growing for 2 years and have used pro mix the whole time. I like it but hp and NOT the one with vermiculite.
I was told initially I didn’t have to be concerned with ph. Not true. From my research etc as stated 6.3 seems to be the sweet spot. I use tap water (124 ppm) but have to add ca/mg
 
Roger A. Shrubber said:
maybe it's more forgiving than we think. if 5.9 works for you, use it, 6.3 has been working for me, maybe anything between the two would be good, just don't know, maybe i'll experiment a little when i have some more set aside
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really the main thing is let the shit dry out if it stays damp its rots,i used to cut coco promix 50-50 works great just a pain hydrating the big blocks of coco,if I miss a feeding with promix u c it next day just like hydro
 
My water comes out of the spring house at 5.9...lime creeks????
I always make my amendments and it bounces back to 5.9 for the win...I have never had anything but healthy plants and never a lockout...I also use very minimal nutes...I never hit them hard or use pgrs...just nutes on the low end every other time.
 
Gquebed said:
I ph my nute solution for promix between 6.1 and 6.4.

I also use the AN ph perfect line. It is meant for RO water... when you use RO water the ph perfect line it actually works very well.

If your ph is ending up at 4.5 then your water must be starting out at a very low ph. My water comes out at the tap at about 6.8 to 7.5 usually, depending on time of year. After i add my nutes i usually end up around 6.5ish... then i bring it down a bit.
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using well water and its a perfect 6.5 before adding nutes then goes down to 4.5 but ive been bring it back up to about 6.0 and that seems to be working good til i just fucked up last night and decided to try out recharge beneficial bacteria and my plants did not react very well to it. Seems like the recharge burnt my fan leaves because yesterday morning there wasnt a single spot on any leaves and this morning there is spots all over fan leaves that are similar to this pic ( sorry dont have a cam at the moment so had to find a pic off the net that looked similar to whats going on), the spots are on plants that are in veg and bloom and i havent changed anything except for using the recharge. But what i dont understand is on the package they claim that wont burn the plant regardless of how much you dose it. I didnt go overboard on it, i just used 1 ts per gallon and every single plant that i used it on now has the spots on the fan leaves. I know its not a def cause it literally happened within about a 10 hour period. Needless to say im quiet pissed lol live and learn i guess
 

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max316420 said:
using well water and its a perfect 6.5 before adding nutes then goes down to 4.5 but ive been bring it back up to about 6.0 and that seems to be working good til i just fucked up last night and decided to try out recharge beneficial bacteria and my plants did not react very well to it. Seems like the recharge burnt my fan leaves because yesterday morning there wasnt a single spot on any leaves and this morning there is spots all over fan leaves that are similar to this pic ( sorry dont have a cam at the moment so had to find a pic off the net that looked similar to whats going on), the spots are on plants that are in veg and bloom and i havent changed anything except for using the recharge. But what i dont understand is on the package they claim that wont burn the plant regardless of how much you dose it. I didnt go overboard on it, i just used 1 ts per gallon and every single plant that i used it on now has the spots on the fan leaves. I know its not a def cause it literally happened within about a 10 hour period. Needless to say im quiet pissed lol live and learn i guess
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Maybe mixing the recharge with the AN nutes created threw something out of whack and burned em up? I dunno...
 
Good information. I use Sensi A & B with ocean forest (I do not fertilize much during veg). This next grow I will be using ProMix HP. Why does the PH drop with ProMix if it is enert?
 
Coloradoclear said:
Good information. I use Sensi A & B with ocean forest (I do not fertilize much during veg). This next grow I will be using ProMix HP. Why does the PH drop with ProMix if it is enert?
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It has lime (cal-mag) to buffer the acidity of peat.
It doesn't have any NPK.
I've found that I still have to add cal-mag. Some plants like more than others...
 
max316420 said:
using well water and its a perfect 6.5 before adding nutes then goes down to 4.5 but ive been bring it back up to about 6.0 and that seems to be working good til i just fucked up last night and decided to try out recharge beneficial bacteria and my plants did not react very well to it. Seems like the recharge burnt my fan leaves because yesterday morning there wasnt a single spot on any leaves and this morning there is spots all over fan leaves that are similar to this pic ( sorry dont have a cam at the moment so had to find a pic off the net that looked similar to whats going on), the spots are on plants that are in veg and bloom and i havent changed anything except for using the recharge. But what i dont understand is on the package they claim that wont burn the plant regardless of how much you dose it. I didnt go overboard on it, i just used 1 ts per gallon and every single plant that i used it on now has the spots on the fan leaves. I know its not a def cause it literally happened within about a 10 hour period. Needless to say im quiet pissed lol live and learn i guess
Click to expand...

The amino acids and fulvic acids can cause the plant to uptake more nutrients immediately and this can cause that issue if you don't dial back the base nutes. anytime you add fulvic/humic/aminos to soilless, 25-35% dial-back in nutrient strength is in order.
 
Found this on another site:

PH for the nutrient mix for soil is 6.4 - 6.7
PH for the nutrient mix for Peat is 6.3 -6.4
PH for the nutrient mix for Coco is 5.8 to 6.2
PH for the nutrient mix for hydro is 5.8 to 6.2

Would Promix HP fall into the peat category? Or maybe between peat and hydro?
 
Deepstuff said:
Found this on another site:

PH for the nutrient mix for soil is 6.4 - 6.7
PH for the nutrient mix for Peat is 6.3 -6.4
PH for the nutrient mix for Coco is 5.8 to 6.2
PH for the nutrient mix for hydro is 5.8 to 6.2

Would Promix HP fall into the peat category? Or maybe between peat and hydro?
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Peat
 
I consider just growing in promix as soilless. All you are growing in is peat moss and perlite. These mixes are made specifically for starting seedlings. It is there to start seeds in a tray and have enough fertilizer to keep them happy for roughly 2-4 weeks. I don't understand why weed growers think you can grow in this stuff solely. If any of you care about sustainability you need to take a deep look in the mirror. There are only so many peat bogs. Put your plants in the ground and tap into the wonders of soil.
 
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