New Promix HP

Chronic Newfie · Sep 13, 2020

How do you water just the roots? Are your cloth sitting in a tray and you just water the tray? My first grow I think I followed your same watering schedule. I had pro-mix and fed just canna brand liquid fert. Feed day, Dry day x2, Water day, Dry day x2, feed day, and repeat.

So its been ages since I last tried to grow indoors. I am thinking of doing the same thing again with Pro-mix + Liquid Fert. (Just googled that Reno schedule. Pretty neat. Not available near me though).

I'm thinking this time around about adding Blood meal, bone meal, and worm castings to the pro-mix along with the liquid ferts. Think thats over kill?

troutman · Sep 13, 2020

^^^ Blood meal indoors will stink too much. Been there and I regretted it a while back. I won't use it indoors again.

Anyways, I just purchased a bunch of Pro-Mix yesterday. I got 2 kinds. I got the PRO-MIX Premium Garden Soil Mix
and the PRO-MIX Organic Premium Vegetable and Herb Soil Mix. I like mixing the 2 together along with other stuff.
I also have a bottle of Pro-Mix Root Booster 5-15-5 that I purchased last week. I also snagged some bonemeal
yesterday along with my 2 PRO-MIX soil mixes.

Get your grow supplies now before garden centres close up. I try to avoid hydroponic stores if I can. :tiphat:

BTW: I got all of the above grow supplies at Canadian Tires.

Going there gives me an excuse to check out the fishing and hunting section too. :biggrin:

Chronic Newfie · Sep 13, 2020

For my outdoor gardens I wasn't pleased with pro-mix garden soils. Last year my tomatoes and peppers did poorly.. This year I used Compost + Grow Max from our local garden/landscaping place. Not 100% sure whats in both of em. My tomatoes and other veggies are rocking this year though.

Can I use that stuff inside? I'm not sure whats in the compost but it stinks to high heaven! I don't think I want to use it inside actually. Sorry I'm kinda thinking out loud.

So I still feel I want to go Pro-mix HP + some organics + liquid ferts.

I don't mind the hydroponic stores. One of them near me has a character of an owner so its nice to chat him up.

troutman · Sep 13, 2020

Outdoors, I'll add cow manure. But I won't risk using shit indoors. :laughing:

Creeperpark · Sep 22, 2020

When i used pro mix, i fed a low dose of nutrients with every watering! I cut the recommendations of the nutrient manufacture in half or used less than half the concentration. What i used to determine the amount of nutrient was the pH which i maintained at 5.5 to 5.8 pH. all the way until the end. Super results!

art.spliff · Sep 22, 2020

Anyone who has heard what harvesting peat moss does to to the environment might be cautious when considering what to use as growing media. Promix planted plants had mold rings this year and if you ask me spraying swimming pool cleaner on the infected peat is not viable for cultivation. Having something delivered or exchanging paper money or credit for grow media is not a guarantee itself. In fact purchasing anything you are not sure of what is inside the package. Much of what is marketed and sold retail for growing is from a mining industry more of a byproduct or recycled refuse waste that is given a price tag. Mining industry byproduct that advertises as a chemical commercial nursery media is another telltale sign that peat moss is not ideal for growing. The only way I would have compost for someone else is if I had enough myself. Reselling waste from a different industry that is not sustainable fails for growing. Coco or perlite or homemade compost and other sources of compost have all performed better in my experience with dirt from the garden best. The comparison is apples to oranges. Digging some dirt native soil and planting in the ground produces standard normal better tasting plants. Containers for the most part make something like cardboard imitations of soil grown plants where appearance and seed viability are in tact but what's inside is lacking. I am not talking about which nutrients work best I have little experience with years of cycling through different solutions or indoor cultivation for that matter. I think what you feed plants directly reflects in the flavor in coco or mineral wool. Outdoor soil simply mixing it or turning it over is enough that does not happen with a bottle.

simon · Nov 23, 2020

FWIW, I've been using Promix HP for the past ~15 years. I add nothing to it, use Jack's fertilizer with tap water, and have never measured pH in my life. I water when the medium is dry - 2gal pots that need 2L of water. There elegance in simplicity. You can see the results in my gallery. Good luck.

https://www.icmag.com/ic/album.php?albumid=27576

Creeperpark · Nov 26, 2020

I love pro mix HP or BX and think its almost fool proof. It has to be fed, but once you dial it in, its very simple to use. The only draw back I see is after about 4 months the texture changes, and holds water and nutrients differently.

nohnsmith1010 · Nov 26, 2020

hello

hello

Mrkline006 said:
So with my schedule and inability to get a auto feed system going, I’ve broke down and given Promix HP a try for this upcoming grow. Now my issues lol. I know a few people who run it, 1 person says water like soil. Water till it’s wet (no runoff) then re-water when dry (2-3days).. another treats it like coco and does daily. Not really sure what to do maybe someone can help. I’m running the normal Promix HP nothing added. What PH should I be running? Also, I knew I could get clones decent size in a 1gal, veg 3-4 weeks and flip with no issues. How much slower is my growth going to be? I try to hit 2.5-3ft before flip. With winter coming I’m on a deadline before the freeze so I only hve 3 maybe 4 weeks to flip.

I’ll be going from 1gallon pots into final container (7gal) how far from flower should I do this? Week before? Sorry for so much talking. Grow starts today lol.

so I have been using pro mix HP for 20 years. one if the best choices. it is 85/15 % mix spagnum/perlite mix. you can treat it as a hydroponic medium. it has perfect air water ratio. you can hand water but I use drip. the important thing is to keep medium EC down to about 50% more than feed . if you feed at 800 ec then runoff should be about 1200 .never let it get double or you will have nutrient lock up.
water to over flow about 15 % each watering to keep medium EC down monitoring runoff.

Switcher56 · Nov 27, 2020

nohnsmith1010 said:
so I have been using pro mix HP for 20 years. one if the best choices. it is 85/15 % mix spagnum/perlite mix. you can treat it as a hydroponic medium. it has perfect air water ratio. you can hand water but I use drip. the important thing is to keep medium EC down to about 50% more than feed . if you feed at 800 ec then runoff should be about 1200 .never let it get double or you will have nutrient lock up.
water to over flow about 15 % each watering to keep medium EC down monitoring runoff.

Prairie patties! Your a hydro dude or so you professed! Let me think :thinking:

30 years in hydro, 20 years in HP Promix as a commercial grower. Which is it? What is your purpose here besides...

You do not water until runoff <--- period full stop!! That was brought over with the coco dudes, You run off 10% in HP Promix and you have sodden soil for a week. Sex and travel come to mind here!

nohnsmith1010 · Nov 27, 2020

100 % agree

100 % agree

art.spliff said:
Several clones in cups of I think promix have mold rings at the stem bases. Watering more is one thing but losing plants to mold at the stem doesn't seem totally right to me. Lightweight no nutrients and holds a lot of water leading to moldy stems? Perhaps I am not used to growing with salt solutions (mixing a powder synthetic fertilizer every watering) but even so it isn't appealing even if it does perform ok. I don't know the cause I used iguana grow and hydroguard but no synthetic pesticide or fungicide. Am I reviewing promix or myself, is bagged coco much better, unsure although native organic soil mixes work better for me. Some plants in cups of soil (home grown compost, perlite, even fox farm) have grown a year or more without mold. I wasn't really paying attention but I don't think peat moss in bulk is that good for organic gardening. The bale of peat is like a prerequisite to the line of chemicals for treating all the issues it comes with.

At the risk of what may be considered off topic it would be nice to know what is contributing to the mold rings and dead or dying plants. If it is mined baled peat moss then maybe not such a good idea to use it, or steam sterilize everything even larger volumes. Otherwise advice is appreciated. As it stands advice is all over the place such as add powdered lime one cup per cubic foot, feed this feed that mix with one teaspoon kelp etc. Not much of a consensus. People brag when they can but help or answering questions is less common /digress. I find Fox Farm the only ready to use grow media that performs as described. An exceptional review coming from me but I do not work for them and I do not advocate any purchased products for growing if one can help it. That is to say not only is it the best soil available on the shelf but it is the only product my plants are still alive and growing healthy in. The others died right away or have always had some kind of problem or deficiency. If this makes me a novice, or pro, or lazy, inexperienced, in any event other brand names wilt and brown plants right out of the bag. That does not sound to me like it is me it sounds like it is the stuff in the bags.

/* A lot of times I feel like I'm just complaining whining not much to talk about in the way of big plants or bumper crops for example. And the reality or sad truth is 90% or more of this entire industry is an equivalent of sham or scamming selling bottles of mostly water stuff that does not work etc. With perhaps some magicians or masters that are hesitant to share their chemical recipes. In fact a contingent here is upfront about using the least costly ingredients/amendments for everything that explains itself. An economics lesson if I short you every time what you provide will be less next time than if I pay more than asking. */

I 100% agree about 90 % of the products are scams. also that a lot of answers are more about bragging than helping the person. all your observations and advice is very accurate

nohnsmith1010 · Nov 27, 2020

agree

agree

simon said:
View Image

FWIW, I've been using Promix HP for the past ~15 years. I add nothing to it, use Jack's fertilizer with tap water, and have never measured pH in my life. I water when the medium is dry - 2gal pots that need 2L of water. There elegance in simplicity. You can see the results in my gallery. Good luck.

https://www.icmag.com/ic/album.php?albumid=27576

I agree

Creeperpark · Nov 29, 2020

Simon, those are some freaking beautiful plants on your link. If anyone dis-agrees they're nuts.

Switcher56 · Nov 29, 2020

Chronic Newfie said:
How do you water just the roots? Are your cloth sitting in a tray and you just water the tray? My first grow I think I followed your same watering schedule. I had pro-mix and fed just canna brand liquid fert. Feed day, Dry day x2, Water day, Dry day x2, feed day, and repeat.

So its been ages since I last tried to grow indoors. I am thinking of doing the same thing again with Pro-mix + Liquid Fert. (Just googled that Reno schedule. Pretty neat. Not available near me though).

I'm thinking this time around about adding Blood meal, bone meal, and worm castings to the pro-mix along with the liquid ferts. Think thats over kill?

I missed this somehow :frown:

https://www.amazon.ca/Remos-Superch...keywords=remo+nutrients&qid=1606648571&sr=8-5

Scrappy-doo · Nov 29, 2020

Do any of you guys mix the HP with perlite, or do you find it to be a good ratio on it's own? I'm used to mixing Promix BX with perlite at a 2/1 ratio. Picked up some HP for the first time and was hoping to be able to just use it right out of the bag.

Sunshineinabag · Nov 29, 2020

I'd rec chunky perlite be added to all pro.mux......but please rinse the perlite once it's gonna be used...that perlite dust is bad juju

Scrappy-doo · Nov 29, 2020

That's what I figured. The dude at the shop said it has extra perlite and is used right out of the bag but I'm all skeptical. Yeah mixing the perlite sucks I usually fill a bucket with holes outside, then bring it inside directly into the shower so the dust doesn't fly everywhere. Still end up holding my breath the whole way thru, lol.

blynx · Nov 29, 2020

Scrappy-doo said:
Do any of you guys mix the HP with perlite, or do you find it to be a good ratio on it's own? I'm used to mixing Promix BX with perlite at a 2/1 ratio. Picked up some HP for the first time and was hoping to be able to just use it right out of the bag.

I used to be able to get BX and would do a 3:1:1 mix of promix

erlite:ewc.

Now I can only get HP in town and I stopped adding perlite. I currently do a 3-4:1 mix of promix:ewc.

That mix is only used for new clones. The rest of the plants get a 50-50 mix of new (hp/ewc) and re-used soil. Re-used soil is made by running rootballs from flowered plants through a 1/2 hardware cloth screen, some Plantone mixed in and let sit in a rubbermaid until use.

sturgeongeneral · Nov 29, 2020

You can definitely treat the promix hp like a hydroponic medium or feed it like it's soil. Either way it works great but for me my best results from it came as a multi feed drip. Left tray was all hp, right coco. Both fed 3x a day

Switcher56 · Nov 29, 2020

Scrappy-doo said:
Do any of you guys mix the HP with perlite, or do you find it to be a good ratio on it's own? I'm used to mixing Promix BX with perlite at a 2/1 ratio. Picked up some HP for the first time and was hoping to be able to just use it right out of the bag.

Sunshineinabag said:
I'd rec chunky perlite be added to all pro.mux......but please rinse the perlite once it's gonna be used...that perlite dust is bad juju

I add an extra 20% and like Sunshine says, make sure it is well rinsed 1st

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