I'm almost positive I'm fighting manganese deficiency, help?

I made a noob mistake and got ahead of myself when planting my sprouts. I used my 8.0+ph tap water for the transplant. I had a ph'd jar sitting there. Just got excited and blew it. So now I am fighting some nasty shit. High ph causes manganese deficiency and based on the spots and the yellowing, while the veins stay green, I think thats what is happening. It also makes sense.

My only problem is, twice I have added slightly acidic, ~6.0 ph water to my soil.Kinda flushed, by letting it run through. I'm just nervous about over watering.It already seems that way but I don't know whats worse, toomuch watering or high ph. After the water drains a bit, my soil levels at 6.8 -7.1 ph... Still a little high... Should I add more acidic water ? Is it hard to stabilize soil usually?

Does my new growth look strong?It looks good to me but It seems like the biggest leaf is turning yellow slightly already.

I'm really hoping my poor baby pulls through with out more leaves getting fucked up. Should I just wait a few days again to flush with slightly acidic water?

180w ufo led
4 x 5000k cfl
Fox Farms Ocean forest (haven't fed nutes yet, soil burned them anyway

You'll be fine. It is hard as hell to change soil ph just by watering, even if the water ph is a bit off. Your new growth looks healthy.

Bugeye said:

You'll be fine. It is hard as hell to change soil ph just by watering, even if the water ph is a bit off. Your new growth looks healthy.

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I keep thinking that but the leaves turn. Those nice green ones grew in the last day. But it looks like they are yellowing in between the veins already.

3 days ago.

The ph of low-ppm water has very little "strength" compared to the soil. Heavily nuted water with a ppm of 800-1100 could affect the ph after 2-3 waterings. But, if it was tap water, I assume it was less than 200. That's not going to have much effect.

This is demonstrated by how much ph up/down is required to move the ph of the water compared to heavily nuted water. Plain tap water takes only a drop or two. Heavily nuted water can take 1/2 to 1 tsp. Your soil has more buffers than the drop or two, so the water's going to move before the soil will.

The soil's ph rises as it dries. If you're watering too much you could be creating a condition that's similar to acidic soil, limiting the ph range the plant experiences, holding it lower. You might be seeing deficiency and attribute it to the one thing you think you did wrong.

If soil ph interests you, invest $60 in a Control Wizard Accurate 8 ph probe. It's handy to have for situations like this. More accurate than those $5-20 probes. After you have a nutrient/soil combination dialed in you won't use it much. But, it's handy for dialing things in.

Also, your soil looks kind of barky. If you haven't grown in that before and had good results, I'd suggest more perlite. (Edit: that second photo shows more perlite. Maybe I'm wrong.).

How old is she? Ph could be the culprit, but I'm thinking cal/mag def. The spotty brown necrosis is a symptom. I like the color of your leaves. Not too dark and not too light. The new growth looks a little light, if she doesn't look like the new growth is going to darken, then I would give her some nutes on Thursday when you feed her. Use something that has more nitrogen and add calmag. Don't go over 250ppm. If you're flushing before you feed, You can probably get away w/ a ph of 5.5 for the flush, then get some ph6.0 nutes in there. Each week try to creep that ph 0.1 until you get your run off to around 6.5.
You could also treat her like a clone and chop the tips of those damaged leaves. That should make her focus on new growth. I don't know what that brown stuff is on that new leaf on the right, You might want to look at that closer. It could be some soil that splashed on your leaf. It could be bug evidence. I hope it's just a speck of dirt.

You are becoming more experienced by your mistakes. It happens to all of us. She might have some problems with that hot soil, she might not. Next time you know to not use straight OF, mix it with a base like promix. FF OF likes a closer ph of 7. I been using all the FF products for years. I would imagine like me it takes awhile for anyone to dial in their nutrients. The more you water this OF the more nutes are released. I'd just give her plain water(no more flushing) and if any problems arise hit it with a foliar spray. I'd give it just enough water to dry out 75% in 2 days, and water just as much till she grows 2x's the size then up the water. GL