The Grow Awards 2026 🏆 
What pH should I water in peat based medium (PRO-MIX HP) using dry organic amendments?
odrexstarted grow question 4y ago
What should I pH my water to in a peat based soil using organic dry amendments? Heard conflicting information. Should be 5.5-6.5 for soilless medium but 6.2-6.8 because organic nutes. Which should it be? Or something different entirely?
Open
Feeding. Other
likes
Answer
AsNoriuanswered grow question 4y ago
I grew for 3 years in pro mix hp
It works better if treated in lower than soil pH. I was going with 6.0-6.2.
Did magic some years ago, later I could not buy it in UK anymore, went to BioBizz and never looked back. It's a very decent product ! Never had any Cal mag issues, but I grew under HP's then.
All the Best !
likes
Complain
Ezzjaybruhanswered grow question 4y ago
Yeah I believe you’d be treating it as it was a soil grow at that point and go for the higher range..
likes
Complain
Similar Grow Questions
Solved
Sneeks420
Dry power vs Liquid fertilizerDo dry fertilizers (like the powders you mix with your soil and topdress) give as good of a result as liquids? And I will be doing my first grow this year outside in the ground (not in a pot) do you recomend powder or liquid? And if so what powder fertilizer do you recomend?Feeding. Other
3y ago
2
4
Solved
1kodah
Mammoth Silica qiestionI won a gift basket yesterday from local shop. Super thrilled as it had tons goodies - one thing being a bottle of Mammoth Silica which I have been wanting to try.
When drawing it up into syringe it was clear fluid with brown chunks - is it supposed to look like this?Feeding. Other
2y ago
2
Solved
420Highlifecouple
Soda water feedingI occasionally give my girls soda water,does it actually provide more Oxygen to the roots?Other. General questions
Setup. Strain - Autoflowering
Feeding. Other
4y ago
2
5
Solved
SeedlockHolmes
Alien mind reading on 100%Coco grow.Hi,
Trying to tune in feedings and watering in a 100%Coco grow "without" an EC meter (I have and it's my safety net for this trial)
I left a note on how I'm doing it on the description of 1st week of the only diary I have.
Posting some pictures soon.
Give me your insights pleaseWeek 1
Feeding. Other
4y ago
3
1
Solved
Tommyweedseed
Auto-flower and NutesShould I feed my Auto Flowers any nutrients? 🎄Week 3
Feeding. Other
4y ago
5
3
Solved
Bdawg
Run off in soil.Do people water to.run off in soil. The soil is house bat mix. So contains some some nutrients.Feeding. Other
6y ago
2
5
Solved
NEEBZK
FlushingI fed nutrients instead of water flush to a plant in week 8 of flowering, the plant itself is ready to harvest. Should I wait a week to flush or will it be ok to harvest and dry as I do not want to wait much long it as the plant is in the perfect sweet spot to harvest.Week 8
Feeding. Other
3y ago
3
3
Solved
Paulinator
How Much Nutrients to use during the flowering phase without burning the roots or frying the leaves ?How much Nutrients is too much Nutrients? Meaning using flowering enhancing nutrients too much over time can either fried the leaves or burned the roots How much is too much ? Does it depend on the strain? Why can some strains handle lots of nutrients and others cannot ?Week 4
Feeding. Other
6y ago
3
Solved
Steeluk1987
Right ppm?I'm not sure if it's normal in soil but when I applied nutrients at 350 ppm the runoff was closer to 500 ppm, I am following the vitalink feeding schedule for earth Max grow+bloom and she seems to be doing will no nute burn or leaf curling, is this the right ppm?Week 5
Feeding. Other
6y ago
2
Solved
AUTOASSASSIN215
MEGACROP ? Should I switch hate liquid nutesI’m a nuub doing my first grows and I must admit I hate the liquid nutes currently using fox farms trio I hate the measuring the ph thing etc thinking about switching to megagrow seen some nice results on YouTube any adviceFeeding. Other
6y ago
1
1
Solved
Blazinjay
Harvest flushOk I’m sure this is a loaded question but here we go. Straight water in rez for the week or change rez daily ? I’ve gave one plant flora kleen and one with out and see and taste no difference still black ash. I’m noticing now that one plant is starting to yellow doing daily rezWeek 26
Feeding. Other
6y ago
2
Solved
JustAnotherGardener
7 years old BIOBIZZI have 2 of bottles of BIOBIZZ nutes but very old (7 years). They were in a cold, dark place all that time. It doesnt smell bad or doesnt look bad either, maybe tiny bit of solidified stuff at the bottom but nothing major. How safe is it to use these? whats worst that can happen?Feeding. Other
5y ago
3
3
Solved
BytownGrower
Which Gaia Green ferts should I use on my autos at the beginning of flowering stage?My (Critical Kush) auto's are starting to flower. Do I continue to use my other Gaia Green ferts until the buds actually develop? Or do I need to start feeding it Gaia's power bloom now?Week 5
Feeding. Other
5y ago
2
2
Solved
CheesePlease
flushing agentWhat is the best flushing agent to use on the market?Week 8
Feeding. Other
4y ago
2
1