Hi Weedhound. No I only have a TDS meter, but isn't it just math to determine Ec?

I believe most tap water has ph buffers. Also, before I had my RO filter and used only tap water, the ph was always high and it took quite a bit more ph down to bring it down. With RO water, it'd only take 2 drops where it used to take 10mls. Thats the buffering capacity in action.

I did some reading on icmag forums, and there is a nice thread about water including PH and buffering capacities and such and such. If I add sodium bicarbonate (NaHCO3), (baking soda! lol) it should increase the buffering capacity without increasing the waters hardness. But I'm leary of trying it, and leaning more towards simply including some of my higher ph tap water first.

I peeked at my roots today and noticed some roots heading into my drain pipe. I gently fished out about a foot long group of roots, lol. I had visions of waking up one fine morning and my entire room is flooded, circuits blown etc etc. Gonna have to rig a barrier that blocks roots, but allows water to flow freely... yikes.
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