Sooo do you PH water with Pro Mix or not?

LeastExpectedGrower

LeastExpectedGrower

Well-Known Member
RuggedWombat said:
The targets on that feed chart are insane. Even half of that is what I would feed a plant toward the end of veg. I tried 1ml of FP and it sent the PPM to 270 so already a bit hot for them this early. I watered down the solution to 150. I already have 20ml syringes, but I'll order a 10 and 1 as well.
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I use the 1ml ones for things like Ca/Mg where I'm doing things like 1 or 1.5 ml, etc. or other things that are concentrated. The slightly larger ones are useful for things like pH Up, and such.

In terms of nutrient strength, right now I have a pair of "ChocoDope" plants that are not showing any signs of burn at 2.1EC. I've not fed any other plants nearly so heavily but these ones were verging on deficiencies & just a bit too light in color with less than that. So it really depends on the plants. I've had some that got grumpy at half that rate.
 
Severed Tongue

Severed Tongue

Well-Known Member
I started using promix hp mycorrhizae this summer, and I don't check ph, just using city tap water. I've checked it a few times over the years it's always 180ish ppm and 6.8-7.0

I planted seeds in solo cups and watered only. Took about 5 days to sprout. I watered again 2 days later, with feed 24-8-16 at 1/4 strength, and each water going fwd throughout the next 2 weeks. In solo cups it was about every 3rd day.

Today, at 16 days from sprout and 3 nodes, I up-potted to 3 gal fabric pots. I soaked them with full strength 24-8-16. I'll give them 48 hours then top them.

Promix faq recommends a 4 feed cycle, 3 times full strength feed then 4th time just water with run off, to rinse out salt build up.

I'm going to follow that and see how it works out. Absolutely love promix quality so far. Clean. Consistent. No bugs!

20221114_152844.jpg
 
TankHankerous

TankHankerous

Well-Known Member
My tap water comes out at 8.0. I add more dolomite lime to my Promix HP even though I know it has some shit in there to buffer ph and because I like to stare toxicities and lockouts in the eye if it means I wont have to ph every watering.

Ever since ditching the bottled nutrients, ph up/down, and all the rest of that happy horse shit, my plants have never looked healthier than using dr. earths dry fertilizers and letting the dolomite lime do its thing. PHing of water is over rated in my situation. I think it gained popularity because a lot of growers were dealing with well water and wacked out ph. NYC tap water is as good as it gets, no need to ph it in my experience. Can only do harm in my opinion
 
LeastExpectedGrower

LeastExpectedGrower

Well-Known Member
Severed Tongue said:
I started using promix hp mycorrhizae this summer, and I don't check ph, just using city tap water. I've checked it a few times over the years it's always 180ish ppm and 6.8-7.0

I planted seeds in solo cups and watered only. Took about 5 days to sprout. I watered again 2 days later, with feed 24-8-16 at 1/4 strength, and each water going fwd throughout the next 2 weeks. In solo cups it was about every 3rd day.

Today, at 16 days from sprout and 3 nodes, I up-potted to 3 gal fabric pots. I soaked them with full strength 24-8-16. I'll give them 48 hours then top them.

Promix faq recommends a 4 feed cycle, 3 times full strength feed then 4th time just water with run off, to rinse out salt build up.

I'm going to follow that and see how it works out. Absolutely love promix quality so far. Clean. Consistent. No bugs!

View attachment 5226220
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Right now I'm doing feed-feed-water, every 3 days. I'm in 5g bags and previously was on a 4-day cycle but the newest plants just drink & eat more.

This is what they looked like about a week ago.
6320545_grow-journal-by-leastexpectedgrowervictoryseedschocodope.jpg
 
OldMedUser

OldMedUser

Well-Known Member
Severed Tongue said:
Promix faq recommends a 4 feed cycle, 3 times full strength feed then 4th time just water with run off, to rinse out salt build up.

I'm going to follow that and see how it works out. Absolutely love promix quality so far. Clean. Consistent. No bugs!
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What ppm do you get when you mix that at full strength? I would be very surprised if you don't fry your plants at those levels. My AN nutes say 4ml/L for full strength and I rarely go higher than half that every 2nd watering and it's only 600ppm or 300ppm using just 1ml/L.

I've used ProMix HP for about 15 years and never read their FAQ tho have read a lot of stuff on their site about growing and most is pretty good. Really good article about pH there all growers should read to understand this very complex subject.

:peace:
 
chuckeye

chuckeye

Well-Known Member
calvin.m16 said:
All input should be around 6.0-6.2 pH with Promix HP from my extremely limited experience.
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Doesn't hurt but it is Not Necessary !

I'm on well water, ppm of 450-500 depending on the season, ph of 7.5

No ph down, Mega Crop one part, towards the end of flowering 7.5g/ 4L, ~ 1000 ppm.

3 gallon fabric pots, 600w MH/HPS in a 4' x 4'.

Sativa Photo's, 50 days of veg. A total of 120 days to harvest, give or take a week.

Amnesia Auto, harvested @ day 96, 46 days of 12/12.

Amnesia Auto Full beer can 8 Oct (Medium).jpg

Double Chocolate

Double Chocolate 9 Nov (Medium).jpg

Durban Poison

Durban Poison 6 Nov (Medium).jpg

Green Crack

Green Crack 10 Nov (Medium).jpg

Lambs Bread

Lambs Bread beer can 2 Nov (Medium).jpg

YMMV bongsmilie

Cheers
 
calvin.m16

calvin.m16

Well-Known Member
chuckeye said:
Doesn't hurt but it is Not Necessary !

I'm on well water, ppm of 450-500 depending on the season, ph of 7.5

No ph down, Mega Crop one part, towards the end of flowering 7.5g/ 4L, ~ 1000 ppm.

3 gallon fabric pots, 600w MH/HPS in a 4' x 4'.

Sativa Photo's, 50 days of veg. A total of 120 days to harvest, give or take a week.

Amnesia Auto, harvested @ day 96, 46 days of 12/12.

View attachment 5226333

Double Chocolate

View attachment 5226334

Durban Poison

View attachment 5226335

Green Crack

View attachment 5226336

Lambs Bread

View attachment 5226337

YMMV bongsmilie

Cheers
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Nicely done, Megacrop mixes really acidic I thought? Are you saying your final input pH was 7.5 or your well water is 7.5 before megacrop? I run Jacks RO its 40 dollars cheaper than megacrop when buying 25 lbs at a time. I envy you for being able to run your well water, mine is absolute trash so I have to use RO.
 
OldMedUser

OldMedUser

Well-Known Member
chuckeye said:
And some nutrients such as Mega Crop are also buffered or chelated is the term they use.
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Buffering and chelation are two totally different things. I would tell you the difference but if you research it yourself you'll learn it better. ;)

My tap water comes from a dugout on the property and is 800ppm and 8+pH. When I got some MegaCrop 2.0 and added 1g/L to some it came out at 6.5 after being well mixed and standing overnight. Same deal with RO came out at 6.0 so there's some good buffering in the MC for sure.

:peace:
 
Brettman

Brettman

Well-Known Member
I don’t really notice a difference wether I ph down or not. I’ve been using Promix HP for a while now, some grows I ph down to 6.0 and some I don’t bother and no difference from what I can tell. My tap is around 7.5-8 and after adding nutes it’s around 6.5ish.
 
Brettman

Brettman

Well-Known Member
In fact I did one grow with my strawberry cough clone I ph’d one and not the other and they were identical right to the end. It’s somehwere in my old grow journal.
 
RuggedWombat

RuggedWombat

Well-Known Member
I think the real question is does PHing to 6 have any disadvantages besides maybe pennies in cost for PH down? I can understand the argument whether it's essential or not, but what harm comes from doing it as an extra precaution? In fact I would think it would provide peace of mind knowing it probably isn't PH issues if something goes wrong. Isolate the variables.
 
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