I've seen allot of conflicting info over the strength (EC number) of jacks 321 in rdwc vs coco. I've seen people say run it full strength in both and others say rdwc needs a lower strength. Im making this thread asking for what you use in RDWC or DWC. Please write what EC number you run in seeding/veg/flower. Thanks
Wastei
Well-Known Member
About 0.6-0.8 EC max in veg and 1.2-1 4 EC in flower. Try keeping it as low as possible without any deficiencies.
It's easier to keep a little higher strength in small reservoirs, so plants can eat up nutrients lowering EC without being deprived before top off/res change. If you have a big res you can run very low EC.
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Anything under 1.3 ec the ph starts to go crazy
rkymtnman
Well-Known Member
you using airstones or waterfalls?
Both
Wastei
Well-Known Member
Decrease aeration. More is not better. Adequate amount is best, not more or less. More aeration than necessary causes pH up swing from my experience. Fish and aquarium owners are well aware of this.
If you don't use RO water I'm out of suggestions. Try adding a potassium silicate product, it will act as cation exchange agent stabilizing pH.
I use ro water. I have the fallponics system that Pa hydroponics sells (gary). The water gets pulled from the res, into the chiller and pumped into the buckets. The water falls about 3 to 4 inches inside the buckets. So you recommend me shutting off my air pump (that I'm totally okay with, saving electricity lol)
rkymtnman
Well-Known Member
i would change that up personally: run your chiller stand alone with a stainless wort chiller in your res. you'll increase the life of your chiller big time.
rkymtnman
Well-Known Member
ditch the air if you can. waterfalls "should" be all you need.
Wastei
Well-Known Member
I would put the airstones in the reservoir! Cheers!
I was thinking of that but i really don't want to add another pump that can potentially leak lol
What water temp do you recommend since I'll be shutting off the air?
rkymtnman
Well-Known Member
the pump would be submerged in a 5 gal bucket. to the chiller, thru the wort chiller and back. easy peasy
rkymtnman
Well-Known Member
65 to 68F
firsttimeARE
Well-Known Member
I do 1.2EC in flower and 1.0EC max in veg.
Seedlings I uae my aerocloner at 0.4EC
I use their finish product the last two weeks and their bloom product first two weeks of flower.
Seedlings I uae my aerocloner at 0.4EC
I use their finish product the last two weeks and their bloom product first two weeks of flower.
1.2 ec for the finish too? I'll be trying that stuff in 2 weeks actually.
firsttimeARE
Well-Known Member
No...im usually at 0.6-0.8EC the last two weeks or whenever my pH starts crashing.
Jacks bloom at 1.2 ec?
thenasty1
Well-Known Member
depends on how much light youre running. maybe on what kind of light or spectrum youre running too- my plants have been hungrier since switching to led, but i dont have any hard science to back this up. i use the same recipe and strength for rdwc, dwc, and f+d. im also running cal prime instead of normal calcium nitrate
seeds/cuts-1 ec (up to 1.3 or so by the time they move to veg)
veg- 1.8-2.15 ec
early to mid flower- 2.2 ec
i gradually reduce as necessary from there, usually ending up around 1.2 or so by the time they come down
these are provisional ec numbers only. if the plants ask for more or less at any point, thats what they get
seeds/cuts-1 ec (up to 1.3 or so by the time they move to veg)
veg- 1.8-2.15 ec
early to mid flower- 2.2 ec
i gradually reduce as necessary from there, usually ending up around 1.2 or so by the time they come down
these are provisional ec numbers only. if the plants ask for more or less at any point, thats what they get