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I don't necessarily think that's true. When I search around I find tons of people who have done successful grows in small reservoirs that say they also need to adjust pH daily.

Sure, but I'd rather not have to mess with adjusting my pH every day, and I can afford the controller so why not.

Actually you're wrong there. I have both a Bluelabs monitor, and I also just bought a Bluelabs pH controller to automate the maintenance of my pH in my tiny res. :)

I don't know if anyone is checking their pH twice a day. I'm the original poster, and I mentioned that my pH drifts from 5.6 to 6.1 in roughly 24 hours, so I personally am adjusting my pH exactly once per day. I'm using Technaflora nutes, which comes in 9 different bottles, that you use in...

I guess at the end of the day I'm trying to figure out how I can have too much N and not enough Cal/Mag, when I'm following the exact instructions laid out by Technaflora, which are pretty highly regarded nutes as far as I can tell. Maybe my plant just needs more Cal/Mag than most for some...

Actually I do! I've already opened the window to cool down the room some more, and while the gauge reads 75.8F at the back of the box, the leaf temp near the top is 74.8F according to my temp gun. So it seems to be pretty close. I guess that means the leaf temps were previously getting as...

Drop the air temps to 72F? Hmm I can certainly try. Everything I've read said that 75-80F when lights are on should be totally acceptable, no? Does it look like my plant is heat stressed to you?

The ppm is in the recommended range of 500-800ppm for veg, provided by both Technaflora and Supercloset, so I'm just following what they said. You think 600ppm is high? For autos it seems like most people recommend working up to about half strength. Isn't 600ppm around "half" ? Here are some...

Thanks guys. I will certainly carry on, but my plant has some real issues so I need to figure out what's causing it. I will definitely try changing the res every day for a week and see if she looks any better a week from now. I guess that will tell me if the pH/phosphorus is part of the problem...

Ya I only adjust the pH once a day. If this is not my problem then I'll start focusing elsewhere. I just can't think of anything because everything else is completely dialed in, and I thought for sure the high amounts of phosphorus I'm adding must be locking out other nutes. Who knows maybe I'm...

Our "tap" water is softened, and I'm not sure how that affects things, but I will certainly look into it and give it a try. Thanks!

The weird part is that I can find about a dozen videos on YouTube where people are growing several plants in this same set up, with only 2 gallons, and their plants look amazing. If my problem isn't the constant pH down that I'm adding every day I'm totally at a loss, because everything is...

Well this my first grow and everything is brand new. I'm using the Bluelabs meter to monitor PPM, water temp and pH and the pH probe was calibrated about a month ago when I first got it.

This is my first grow and I'm having trouble. Everything else is dialed in, so I think it must be related to the daily 5.6-6.1 pH swing I see and/or the pH down that I'm constantly having to add every single day. My plant often looks droopy as if it's not getting enough oxygen (which it is)...

Cool thanks so much for the help everyone you guys rock.

So I had some early problems that I'm pretty sure were due to overwatering, but once I got the rockwool into a net pot and into the system she started doing pretty well - until yesterday when these brown spots started appearing on both of her first real leaves. The edges are also curling up just...