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12-18-2006, 07:51 PM #1OPSenior Member
PH Dropping quickly?
Ok I'll try to update.
The PH of the plain RO water is 6.0 all around. So I'd say my containers are clean and neutral and not affecting PH since I fill them all week long at various times, then into the fridge until needed.
My PH since the res change has stayed at 5.8 since I adjusted it up after adding nutrients.
Since then, I've decided most of my new issues (stiff feeling, downward curving new growth, burned tips) were due to too strong nutrients. My plants may be too young for such a strong (1400+ppm) mixture. So I dipped a clean bucket in and removed about 2 gallons, and replaced with 2 gallons of plain RO water. PPM is now at 1110.
I also took a closer peek inside my grow tub and I decided some of the curl could have been due to "overwatering" maybe? I raised up my growtub another inch and a half or so.. Allowing me to keep the same capacity, just a bit lower water level.
The new growth seems more consistent now, and is not curling down. The branch growth is still very good, one decided to be a triple noded branch. Fine by me, lol.
I *still* have the issue of brown spots (yellowish in the center with a distinct darker brown/rusty border). Spots begin near tips and work their way inwards towards the stem basically. A few leaves have crisped right up. Mid level large fan leaves.
Incidently, if I started again today I'd leave only 1 plant per 10 gallon tub. There's simply not enough room between the plants unless you train them away from each other immediately. Clearly, 5 gallon buckets are the way to go with DWC unless you're going to be training your plants with a firm hand.MisterE Reviewed by MisterE on . PH Dropping quickly? I'm sorry to post this question, I tried to search but the term "PH" is too short for the boards search function... I'm having to PH Up my nutes more frequently as my plants grow. I'm wondering if this is considered normal, or if it is indicitive of any actual problems etc. I only use 8 to 10 gallons or so total (going to change it out and measure carefully today) and the plants are only about 10 inches tall, on their 8th node. I calibrated my continuous meter yesterday, and PH Up'd to Rating: 5
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