Need ph help

[Redgrow]

Starting my first grow. Small.
On week 3
I understand ph but want advice. So I started feeding plant products at 400ppm and was planning on moving up 100ppm a week. Upon my research I found mr.canuck videos. He talked about a organic grow using only Gia green 4-4-4. Now me being dumb, I thought I would switch to this method as it seemed easy. I mixed the proper amount into my soil on two plants and left the other two on my other plan. Now 4 days later my soil ph has rose to 7.7 on those two plants. How do I get it back down. Flush plants??? I am growing in pro mix. Thanks

 

[bad dragon bzzz]

is pro mix coco or soil ?
i dont want to confuse things by assuming.not that i have an idea what im talking about.....but hopefully someone with half a will be along shortly
good luck n keep er lit

 

[Redgrow]

Pro mix is soil

 

[bad dragon bzzz]

ph isnt as far out for soil as it would have been for coco,so that one good thing my guess is the plants dont look really unhappy about it ? if they look ok dont flush.just adjust the ph of the next feed/watering to ph 6,and over next week or so should be back on track thats not advice,thats just what i would do,but i could be an eejit,wait for a forth opinion.dont panic drink and smoke :smoking:
good luck

 

[MesaBoogie]

Promix has Both a peat and Coco mix available. I just started using Promix myself and had really bad results feeding at 6.5 PH. I did some research and I found that promix recommends feeding at 5.8 to 6.0 for their Promix HP. I've restarted my grow at those PH levels and things seem to be running much smoother.

I was actually thinking about following a MR.Canuck style grow with promix and gaia green, but I was unsure how things would buffer out with those amendments in promix. If you have a grow journal up send me a tag, I'd like to follow along and learn from your grow what works and doesn't.

I recently just bought a bag of Gaia Green living soil (way to expensive), figured I would do a test run of that.

 

[Machamillion]

Promix has Both a peat and Coco mix available. I just started using Promix myself and had really bad results feeding at 6.5 PH. I did some research and I found that promix recommends feeding at 5.8 to 6.0 for their Promix HP. I've restarted my grow at those PH levels and things seem to be running much smoother.

I was actually thinking about following a MR.Canuck style grow with promix and gaia green, but I was unsure how things would buffer out with those amendments in promix. If you have a grow journal up send me a tag, I'd like to follow along and learn from your grow what works and doesn't.

I recently just bought a bag of Gaia Green living soil (way to expensive), figured I would do a test run of that.

I feed my PM hp 6.8 pop to chop without issues.

 

[Overboard]

Just finished my first grow with coco and dry amendments (Dr. Earth because Gaia Green is difficult to come by) and I can confirm that I was pH-ing my water down near 5.8 at the end of my grow with better results. Be sure to use cal/mag and mycorrhizae, and I threw in some fungus gnat nematodes for good measure at every re-amendment. You should be fine for now, but you'll need to top dress after 3 weeks and every 3-4 weeks after, and start using a mix of flower/veg dry amendments. For the last feeding, use all bloom, and remember you don't need to flush with organic amendments, but if you still want to, just water with un-pH-ed dechlorinated tap water.

 

[Grow1ne]

Just finished my first grow with coco and dry amendments (Dr. Earth because Gaia Green is difficult to come by) and I can confirm that I was pH-ing my water down near 5.8 at the end of my grow with better results. Be sure to use cal/mag and mycorrhizae, and I threw in some fungus gnat nematodes for good measure at every re-amendment. You should be fine for now, but you'll need to top dress after 3 weeks and every 3-4 weeks after, and start using a mix of flower/veg dry amendments. For the last feeding, use all bloom, and remember you don't need to flush with organic amendments, but if you still want to, just water with un-pH-ed dechlorinated tap water.

Hey Overboard I’m trying a similar grow and have found the posts of yours I’ve come across helpful and hopeful. Would you recommend pHing down around 5.8 out of the gate? Also how often did you add cal mag and/or mycorrhizae?

 

[Overboard]

Hey Overboard I’m trying a similar grow and have found the posts of yours I’ve come across helpful and hopeful. Would you recommend pHing down around 5.8 out of the gate? Also how often did you add cal mag and/or mycorrhizae?

Sorry for the late reply. That was the first grow which I totally abused. I let the medium get WAY too dry between waterings, and it wrecked the pH.

This second time around, I added some soil acidifier at half the listed top-dress amount. I did that when I mixed in the perlite at the beginning, and then once at the second top-dress. Next grow I'll add it every time I re-amend a half the strength, it really seemed to bring out the purple coloration in the strains where it was supposed to happen.

Cal/Mag at every watering. Every time, since it's not present in the soil. The dry amendments I'm using, Dr. Earth, includes mycorrhizae, and since I planted in the final containers, I never needed to add more. Judging from the first grow, the roots absolutely filled the 3 gal fabric pots very evenly from top to bottom.

 

[Overboard]

So, no, I wouldn't pH down immediately, but keep it between 6-6.5, and reduce to 6 at the end unless you're seeing problems you can't explain.