Ph value is decreasing despite BioBizzUp

Sometimes things can grow in the soil that will lower the PH, like microbes. maybe from AACT? Amendments take time and need to be mixed into all the medium. hard to top dress a PH correction but not impossible, just takes time, Its good you pushed your lighting back to 18hr vs 24, and I see you now have a fan in the tent, Don't point the fan directly at the plant just point it into a wall/corner so it moves the air but not directly blowing on one pant, it will flow around the leaves helping it out don't worry. Or place it on the air vent sucking air out or pushing air in continuously. I still think this is a buildup in the soil as well. Hard to diagnose when there are so many things going into it. but the PH needs to be corrected. Bio Buzz uses a weird ph+ "Bio·Up is a humic acids based formulation harvested from natural sources," Google says humic acids have a ph range, "it generally has a pH between 5.5 and 8.0" logically anything above 7 is not an acid. and even at 8. it is a week PH up, normally that stuff is 10-11 or even 12 PH. I would switch it out for a potassium hydroxide "KOH" or potassium carbonate "K2CO3" that has better PH managing capabilities. These items are reactive so need to be added in first or on their own outside any Si or Ca/Mg. If you have baking soda "ph 9" or washing soda "ph 11" they have a higher PH then biobuzz and can help lower it, however they do add salt into the mix... so I would only do this once and get some runoff with it using small amounts use a EC pen to confirm it won't burn. If the leave are ready to fall off a simple tap will remove em. if you gotta pull at em. the plant is not ready the release them yet.

Hello! Am I reading your diary correct? You have 60+gallon of soil but are adding ph up via a liter of water from a spray bottle? I think the expectation that this process will change the Ph of your 60+ gallon of soil is just unreasonable. I would suggest setting the ph of your water and totally saturate the soil during the next watering. Dead leaves you can remove. Dead material attracts things you don't want on your plant.

Also, 4ml & 10ml of nutrients. WAY TOO MUCH.. Lower your nutrients. + dolomite lime takes weeks to take affect. Not ideal adding it like that. You go by ppm. Not ml/l.

You're measuring run off? With soil you need a ph stick. You can't tesr soil run off. It'll nvr give you the correct ph. As the soil filters out the nutrients, what you get out the end is waste water. Really u shouldn't be getting any run-off with soil imo.

High weefi, The reason is really simple. Your plant does use more water then nutrients and because the nutrients are acidic, the pH drops. The reason for your deficiency is indeed due the low pH value. You need to give less nutrients if you want the pH value to increase to the right value. You can start with 25% less nutrients and measure howmuch the pH will increase. Happy Growing Buddy! 💚

Iv looked at your diary, looks like your medium may have been outa the required ph value for a short while. Next watering in your schedule put through double the amount of water with no nutes and have your water around a ph of 7.0, hopefully that will remove any salt build ups and reset your medium closer to ph 6.0. Looks like you needed a bit of calcium a few weeks back. As for dead leaves, if they are dead then remove them, if they have life left in them then leave them alone. Good luck.

SD Question: Pictures would be very helpful, as well as further info like how old the plant is and which stage it's in. Without that it's difficult to make an assessment. Ph value: That could be due to several things including, which type of soil you are using. Coco can absorb nutrients and retain them thus influeincing the measurements of your runoff. Would definitely need more info here.