Gf,
Ive never heard the thought of co2 matching, and feeding ppms. Im not sure thats correct? Only because of my past experiences running it? Ive had girls eat nutes like crazy but want 1200 ppm, and some light feeders that liked 1700 ppm. Also my room is "completely" sealed. Not even a crack in the door so I must add co2. Its low right now at 1200 to reduce stress... probably only mine. lol
Also some feeding programs mix higher in ppm than others.
I dont add to any ph up/down to the epicenter unless diluted first in 5gal of fresh water. IME I did early and it gave me drastic swings. I add 1/3 bucket of this every 10-20 min into my remaining empty 3 sites at the far end with no plants, so it dilutes further before pump transfer to the epicenter. Next round those sites will be full if I keep this system?
I let my ph swing but no lower than 5.2 or higher than 6.2. After it mixes I turn on my ball valve, only during the day, my ph is always 5.5 to 5.8 all day. At night I shut down my top off ball valve and let the ph rise overnight. Each morning I start my topoff by adding fresh water and my nute ratio according to ppm I think they may want. Less or more based on the overnight rise and ppm usage I see... Its a simple way for me to top off, monitor, and reduce any chance of a leak while allowing ph to rise some. IMO I feel if I locked my plants in I would have major issues because some elements are available lower in ph and others higher.
When it no longer rises overnight im pushing them and I can see it in the tips, color, and texture of my leaf. My co2 levels I monitor by the transpiration of moisture in the air (r.h) in my sealed room along with the leaf ridges. Example, if my r.h is high and I see a slight outer tip ridge lift, I know im good but if the ridge curls then I back it down. The ridge I mean is the tiny jagged edge of the leaf actually turns "up" similar to mag def or heavy feeding, but no color or burn you know. I find my ridge control is directly affected by my co2 ppm and the tip will turn or flatten based on it, with no damage. In this new room I have to add another dehuey because my r.h is too high and i dont have the same ability now that they are huge to dial it and get the control i like.
This is only my experience, Im not sure how much of this is correct? Im gonna read on the co2 and feeding ppms you mention to see what I find. Thanks man. All info is good info.
