Well the baking soda SEEMS to have done the trick! I took about half a teaspoon and mixed it with a few tablespoons of water and stirred it a bit and dribbled in a SMALL amount. My ph went up, but it's STAYing up is the important thing.

I believe the article I read on icmag was correct, about it acting as a PH buffer.
It went up quickly, and in fact I'm about to go Down it, lmao.

Res change tomorrow with any ph up adjustments using baking soda and a prayer
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