Makes me think of a big hoard of drunk girls all hanging onto one another for support. Good stuff.
But really, I just post in this thread to make sure you're still alive, oo.
Where the hell is run four?
Too damn boring?
What about the new genetics?
Huh?
Makes me think of a big hoard of drunk girls all hanging onto one another for support. Good stuff.
Run 4 is coming...with new genetics. I've had a rough summer but things are calming down now.
Why try and reinvent the wheel?
bitch about how boring it is.
New PPK meme: Boring is good! though tedious...(But it's still going to be boring.)
Quote:
you mentioned back that you were running super high temps in your grow space... am I correct in that? If so that could maybe explain the fluctuations you saw. (more water transpired to help cool plant surfaces... stomata close too.... not as much growth... higher concentration of nutes jacks up EC and drops pH.... lower pH prevents takeup of some nutes.... concentration climbs higher.... water added.... EC drops a bit and pH climbs... maybe temps come down a bit, stomata open, transpiration resumes....) - just a guess?
Good memory, but that set up was torn down about a year ago.
This one was in mid seventies, with 60-70% humidity throughout.
I believe the rational of changeout for any recirculation system is true for a PPK.
If your nute profile hits the demands of the plants metabolism, you'll have less residue (i.e. it takes everything up.)
If we presume most of our best profiles are build on mineral tissue samples, we are looking at development over time. So our best profiles are over the whole of the life of the plant.
By running any recirculating system in perpetual, different plants are eating differently, and even out the spikes of the system. (i.e. chowing P during this phase, K over here... etc.)
What the PPK succeeds in doing, in my opinion, is keeping concentrations minimized in the media (i.e. keeping the root zone clean), by flusing continuously all concentrations out of the RZ.
So at various times, I had varioius EC measurements with different pH. So today, ec 1.0 might have a pH of 5.4, and two weeks later, EC of 1.0 might have a reading of 6.0.
(I had my meter set up in my control bucket).
(I had my RO top off to the bulk reservoir, and would add Jacks directly to that when the mood hit me, so it happened that I dropped down to EC 0 in bulk for the last two weeks.)
Since my bulk feed is always the same profile, it stands to reason that the plant is ingesting different profiles throughout growth.
I'll run any pH from 5.4-6.2 without hesitation, and it's worth noting that the readings never worked outside of this range.
My point is, I think, that the PPK doesn't change the metabolic process of the plant, but rather effectively manages what would otherwise be dangerous concentrations. By running a perpetual system, we further reduce these dramatic swings (provided that our starting profile is reasonable for our genetics.)
i dont know if you know but the pictures in the first page arent working
the ones where you explain what the hell a PPK is and how to make one
the really useful stuff
A couple of questions about PPK design.. (as the internet has virtually no pics anymore)
#1. What size pvc pipe is best for media wicks? One larger 2" pipe in the middle or 3x 1/2" pipes in a triangle configuration? Is there a maximum size pipe to use as a wick?
#2. Does the height of the water level in the bucket dictate the moisture level of the medium? ie. the higher the water, the more moisture in the medium? How high can the media wick be in the actual medium pot?
#3. Could you use a rocket pot with a media wick cut into the bottom or do you need as much pressure between the lower bucket and upper bucket as possible?
Cheers Jimmy.