Do you have a way to check EC? I do on my meter but I never really use it...always go with the ppms....I have actually had 2 of my 8 today come up with a lower ph but Im wondering if perhaps I used too much ph down yesterday.....obviously that wouldn't be your problem...just babbling....if I see it again I will check EC on my plants. I'm not sure that there ARE buffers in tap water.....just shades of either acid or alkaline with no stabilizers. Or perhaps more than shades......
Weedhound Reviewed by Weedhound 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