I only said the thing about pH swing because it can be a good thing, and it will happen some, even so, but my coco never really dries out either.
Peak is a very good all around PK boost I use.Raise your jacks by 10-20% and then see in a week how they are looking or if you have a Pho’s dominate fert add some aka bloom booster ( add a little ) , you need more phosphorous , and if your ph is out of whack that will also mess with intakers
my suggestion examples;
peak — Aurora Innovations ( apply at 1-5ml)
or
apply at 2.5ml-5ml ( use this as ur base if that was ur choice )
Shop | Hawthorne Gardening Company
The largest and most experienced supplier of horticulture, organics, hydroponics, and lighting supplies. We are a distributor for leading brand name suppliers such as Gavita, Eye Hortilux lamps, Grodan rockwool, General Hydroponics, Botanicare, Bloombastic, Atami, Hydro Dynamics, Roots Organics...www.hawthornegc.com
I agree with Burned, in coco P is depleted like calcium. I don’t have experience with Jacks 321 to know for sure what the ratio is of NKP, could it just be strain specific.
I use their complete Soul line, fantastic stuff.
I do not measure run off, or root zone PH, or slurry PH, I do water to run off, as you mentioned to reset EC and to wash salts that build up daily in coco, salt build up can effect PH, and can cause a range of problems.If you're watering to runoff each time you're essentially resetting the EC of the media each time you do, then the pH will swing as things dry, until you hit them again. I don't flush in those circumstances, unless something goes wrong. I think those runoff numbers are pretty sexy, actually. I don't measure run-off, but when I did it was usually hotter than that. But I'm a hack, so...grain of salt.
I had their whole 2.5 gal soul line, back when it was called soul synthetics vs soul brand ( same stuff )
One thing I would like to add here, maybe it's been said, if so I apologize, but recharge has a lot of fulvic, humic and kelp. If you are also adding that and running weekly recharge, you could have an issue there. I've done it. Have you tried a soil slurry instead of checking runoff by chance? That will give a much better idea of what the situation is like at the roots. Just do it when you are about to feed again so that the soil/medium is on the drier side. Just a thought.
This is true , I also have had big ph swings w recharge.
I would personally recommend soil slurries in place of reading runoff. Since I have changed, knock on wood, I have not any issues. As I've been able to stay ahead or on top of any changes. Another huge factor, now that I'm awake, is your water. If you're using ro or distilled you need to compensate for alkalinity, I do not mean high ph alkaline, but the water's ability to buffer acids. I have switched from dolomite for everything to calcitic lime. I have had so much better luck as I can control the amount of K and cal much better now while still buffering ro or distilled. Just another thing I see a lot of people overlooking. Best of luck my friend. Sounds like you're paying attention, and that's half the battle.
