Gmix
Supporter
- Posts
- 3,487
- Reactions
- 7,423
- Joined
- Feb 5, 2021
- Points
- 263
They are in soilFirst thing Id do is check PH of soil.
2nd thing Id do is can that fertilizer, and never have to deal with Cal/Mag again.
Id switch to??
Master Blend
4 18 38
Epsom Salts
Calcium Nitrate
NOTHING else needed.
Also if you want to use your Tap Water?? Dilute it 50%+ with Distilled/RO Water. Id cut it 65% myself, but also check if you can, the sodium content. If high, scrap it.
Ocean Forest-Forest Mix PH is best at 5.8-6.2
And water is best PH to the same 5.8-6.2
Grow Big is Hybrid, and is to be TREATED AS A CHEMICAL GROW, NOT ORGANIC
NOT 6.2-6.4, and your ph water up to as high as 6.7, is an extremely bad idea.
OF-FOREST MIX often bottoms out at 5.0-5.5 PH.
Forest Mix as other OF soiless mixes are low in Calcium, and Moderate in Magnesium.
I would have also cut the Forest Mix with 30% perlite. Forest Mix I believe is heaviest of all the OF products, and is not conductive to good root aeration.
If medium needs PH correction??
I recommend using 2/3 parts Calcitic Lime and 1/3 pars Dolomite. While I dont know what amounts youd need, Id use that ratio as that is what most Peat based Manufacturers like Premier use to correct PH/Buffer Peat Based Soilless Mediums.
I myself use Promix BX, others like HP, as it is a bit lighter, but I use HID/HPS and like the bit of extra water retention. Both are A#1. Next time, if possible use wither Promix BX, or HP.
But Id can the fertilizer and switch to
Master Blend
Epsom Salts
Calcium Nitrate.
Also they have to mixed in that order.
PH water after EC Achieved. I try and get PH water under 5.9
Use EC of .8 on seedlings from Day ONE-13 on a 56-70 days flowering strain.
EC 1.6 Veg
Early Flowering
EC 1.6 from Day 1 12/12-Day 20
Also EC is based on 500 Scale
EC 1.8 Day 21- day 48
EC Day 49-70 1.6
What am I missing soil ph should be 6.3-6.9
Your quoting hydro ph range
am I missing something ?