Anyone Run Promix-BX

Trich_holmes

Well-Known Member
we have really clean tap water, let it sit for a day. ppm 10 or less.
Damn that's crazy! I've used tapwater now in three different cities and haven't had any issues at all. I've never deviated from the box either except up-and-down the amount of base depending on strain, plus I use Silica which is a natural up so maybe that's why I haven't had any problems...interesting. Hell I don't even dechlorinate anymore.
 

SamsonsRiddle

Well-Known Member
The ones in the second week of flower, they started getting those problems after i watered them with 6.3ph'd water.. prior when i checked the ruff off it was at like 1900ppm and they were totally green and fine. honestly im quite confused about alot of this, im not sure how to grow in BX without any nutrient deficiencies
With promix, you don't want to let the pot dry out but to go from wet to damp. The top of your medium should never be dry looking. Also, you shouldn't ever need to flush promix, but if the ppms or ec is too high then run some lower number nutrient water through. The runoff in Promix BX can be deceiving as sometimes later in flower the ppms/ec reads much higher than what is actually available.

Are you feeding every time? Promix likes frequent low level feedings. Instead of 980 try 400 ppm (.5 scale) and don't give them a sopping runoff unless you are trying to flush out some of the old nutes.
 

arcalion

Well-Known Member
With promix, you don't want to let the pot dry out but to go from wet to damp. The top of your medium should never be dry looking. Also, you shouldn't ever need to flush promix, but if the ppms or ec is too high then run some lower number nutrient water through. The runoff in Promix BX can be deceiving as sometimes later in flower the ppms/ec reads much higher than what is actually available.

Are you feeding every time? Promix likes frequent low level feedings. Instead of 980 try 400 ppm (.5 scale) and don't give them a sopping runoff unless you are trying to flush out some of the old nutes.
What i've been doing so far in my flower rooms is water 3.5litres every wednesday, while every sunday i would feed about 980ppms with 3.5litres, currently i brought it both down to 3 litres per 3g. it never gets a chance to dry out and the guy at the store told me that it should be drying out. but he was thinking i was in HP. atm the last feeding i did was about 980ppm with 3litres. should i be waiting a day until its pretty dry then feed it with 400ppm?
like can i water them regularly while uping the dose slowly and not worrying about any kind of run off? since my Blue Glues have been doing fine like that in Veg, its just in Flower shit goes weird.
 
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SamsonsRiddle

Well-Known Member
What i've been doing so far in my flower rooms is water 3.5litres every wednesday, while every sunday i would feed about 980ppms with 3.5litres, currently i brought it both down to 3 litres per 3g. it never gets a chance to dry out and the guy at the store told me that it should be drying out. but he was thinking i was in HP. atm the last feeding i did was about 980ppm with 3litres. should i be waiting a day until its pretty dry then feed it with 400ppm?
like can i water them regularly while uping the dose slowly and not worrying about any kind of run off? since my Blue Glues have been doing fine like that in Veg, its just in Flower shit goes weird.
Promix should never dry out, especially to the point where it looks light brown. Dry Promix has the nutritional value of cardboard. I know when BX dries out it separates from the side of the container, which can actually damage your roots. To combat this, I was taught to add vermiculite which actually keeps it from separating from the side when it dries out and evens out the texture. That and perlite which helps it dry out quicker.

In your case, i would go with what you are heading towards. Less water and less nutrients EVERY TIME. Try 3 liters with some 350ppm or 400ppm nutrient solution (are you on the .5 scale?). Do this when it gets to the day before it would turn back to dried out looking.

Some people like to push it to the limit with their ppms and see how much a plant can take, but you may be surprised at how little it actually takes to keep them green and happy.

What nutrients are you using?
 

arcalion

Well-Known Member
Promix should never dry out, especially to the point where it looks light brown. Dry Promix has the nutritional value of cardboard. I know when BX dries out it separates from the side of the container, which can actually damage your roots. To combat this, I was taught to add vermiculite which actually keeps it from separating from the side when it dries out and evens out the texture. That and perlite which helps it dry out quicker.

In your case, i would go with what you are heading towards. Less water and less nutrients EVERY TIME. Try 3 liters with some 350ppm or 400ppm nutrient solution (are you on the .5 scale?). Do this when it gets to the day before it would turn back to dried out looking.

Some people like to push it to the limit with their ppms and see how much a plant can take, but you may be surprised at how little it actually takes to keep them green and happy.

What nutrients are you using?
ah ok well ill probably wait til this weekend too see how heavy my pots are. usually i would be watering in 1 hour but there all pretty heavy even with the pots i only add 1 litre every wed/sunday. ATM im using sensi grow A+B, from the looks of my veg plants there super green with no problems and i barely need to give them nutrients since i dont get any run off. i think im going to continue doing the 1 litre per 3g if it starts to get dryer and yellower then ill up the nutrients by maybe 200-400ppms.
 

Dr.Nick Riviera

Well-Known Member
The ones in the second week of flower, they started getting those problems after i watered them with 6.3ph'd water.. prior when i checked the ruff off it was at like 1900ppm and they were totally green and fine. honestly im quite confused about alot of this, im not sure how to grow in BX without any nutrient deficiencies
simple, feed 6- 800 ppms of veg nutes EVERYTIME you water until about week 5 or 6 of flower,Ph shouldn't matter, it should change as it dries. then you can use some boosters if you want, but it looks like you might also have spidermites
 

arcalion

Well-Known Member
simple, feed 6- 800 ppms of veg nutes EVERYTIME you water until about week 5 or 6 of flower,Ph shouldn't matter, it should change as it dries. then you can use some boosters if you want, but it looks like you might also have spidermites
im using Sensi Grow A + B and im going to check for the spiders, i feel like its just nutrient deficiencies just because i screwed up on that room
 

arcalion

Well-Known Member
simple, feed 6- 800 ppms of veg nutes EVERYTIME you water until about week 5 or 6 of flower,Ph shouldn't matter, it should change as it dries. then you can use some boosters if you want, but it looks like you might also have spidermites
Will the spidermites go away after im done the harvest in about a week n a bit?
 

Chef420

Well-Known Member
The spider mites won't just go away. They're able to hang out and wait. You have to fumigate and bleach. Seriously, search and there are many threads and the common theme is multiple a multi pronged attack. YouTube has many as well.
 

arcalion

Well-Known Member
The spider mites won't just go away. They're able to hang out and wait. You have to fumigate and bleach. Seriously, search and there are many threads and the common theme is multiple a multi pronged attack. YouTube has many as well.
so basically i gotta spray my entire tent after the harvest?
i guess i also better go get some small fans in there
 

Chef420

Well-Known Member
resist doing what? watering only 1 litre?
Yes. They're weeds. They're st their best when they're pushed. Reaching for water and nutrients. Otherwise they get lazy. You want to promote vigorous growth. For that you need to make the plant work for it, not continually feed it. This is really a basic principle you need to grasp. I'm on my 3rd grow and I still have to resist the urge. If you really let the plants starve for water, they'll droop but I've never let them get to that point. The pots will be very light ( and individual plants will feed at different rates) and the top layer will be fluffy and light and dry.
Also pour off any runoff. I hate doing that so that's why I use 3g pots. 1g feeds perfectly and I don't have to deal with dumping saucers. Cannabis doesn't like to have wet feet.
 

arcalion

Well-Known Member
Yes. They're weeds. They're st their best when they're pushed. Reaching for water and nutrients. Otherwise they get lazy. You want to promote vigorous growth. For that you need to make the plant work for it, not continually feed it. This is really a basic principle you need to grasp. I'm on my 3rd grow and I still have to resist the urge. If you really let the plants starve for water, they'll droop but I've never let them get to that point. The pots will be very light ( and individual plants will feed at different rates) and the top layer will be fluffy and light and dry.
Also pour off any runoff. I hate doing that so that's why I use 3g pots. 1g feeds perfectly and I don't have to deal with dumping saucers. Cannabis doesn't like to have wet feet.
how long does it take for it to dry off? i feed them sunday and there still extremely wet, i may go to the store and get a couple small fans
 

Chef420

Well-Known Member
I've read on here of people using bug bombs and then wiping down with a bleach solution. I wipe down with bleach between grows just for safety.
I don't have access to clones where I live but people suggest quarantining them. I wash everything I get st the hydro store in a bleach solution. Maybe I'm paranoid, buh.
 

Chef420

Well-Known Member
It depends on the plant/strain.
I have 3 plants I just flipped into flower. They're all in 3g pots. Just before I flipped I fed them and it took 10 days before they were ready again. The next feed will be after 5-6 days. When they're rolling in flower it's close to every 3 days. When I say feed I mean water-feed-water etc. That's my experience. But I always wait until the pot is light.
 

arcalion

Well-Known Member
It depends on the plant/strain.
I have 3 plants I just flipped into flower. They're all in 3g pots. Just before I flipped I fed them and it took 10 days before they were ready again. The next feed will be after 5-6 days. When they're rolling in flower it's close to every 3 days. When I say feed I mean water-feed-water etc. That's my experience. But I always wait until the pot is light.
so i looked under my infected leaves of my plants and i havent seen anything that resembles spiders, not is on the bottom of the leaves anywhere that i look, i might have seen a egg but that was only on one leaf.
also your saying that your pots usually dry every 3days? anyways the guy at the hydro store told me to use pro-mix HP since it dries quicker, usually in 3-4days using 3.5litres or 4litres. so im probably gonna get rid of this batch of BX and start transplanting my little babies into HP once i get it since apparently i wont have problems with PH, also going to stop using the Sensi Bloom A + B and use just Growth A +B and Bloom A + B from the guys who run the store
 

Chef420

Well-Known Member
Whoa slow down. Take a breath.
Your plants won't take 3.5L every 3 days until they're big enough to. The pro mix is designed to retain the water long enough for the plant to use it but st the same time not drown it. Coco dries out so quickly you can water it several times a day.
You can't expect them to go through water that quickly. 3.5L every 3 days yes but only when they're at their peak well into flower.
Stay with your pro mix.
Here's another thing. I live in a city with good tap water. I don't know what the ppm/ec is I just know everyone says it's fine and I don't need cal/mag. Ph isn't an issue because the pro mix is buffered. They've made it as idiot proof as possible.
Get the watering thing down. Do your nutes at 1/2 strength and work up to 3/4.
I can't give you advice on which lines to run etc but I know about pro mix and doing an alternate feeding/watering schedule.
Also, give everything a chance to take effect. It doesn't happen overnight.
 
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