How to lower soil ph

Is there a simple answer to the high soil ph question only with a soil ph of 7.4 my plants surely aren’t taking in many nutes and they look sick.?

Use elemental sulfur & gypsum to amend soil. Search epsoma soil acidifier

Thanks. Any idea at all why my run off would have gone from 6.4 to 7.4 within a week? This confuses me as I now have deficient plants.

Baron Von Thunderclapp said:

Thanks. Any idea at all why my run off would have gone from 6.4 to 7.4 within a week? This confuses me as I now have deficient plants.

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You can't fully trust runoff. You could be flushing out shit and getting inaccurate results. Say you have a lot of Ca in your soil. If you water with citric acid, it will bind with some of that Ca and your runoff will show higher than it actually is.

Your not suppose to read runoff, soil is a complex mix it dosent matter what runoff says. You dont have a ph problem and organic stuff registers wrong in its ph a lot.

Baron Von Thunderclapp said:

Is there a simple answer to the high soil ph question only with a soil ph of 7.4 my plants surely aren’t taking in many nutes and they look sick.?

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Pics man.

Help! Stressed plant and stressed grower. My advice has lead me to a mag deficiency but why? If my soil ph is high it would show as a mag deficiency along with some other things I suppose. I’m putting accurate 6.5 ph in by the way. Also the new little flowers are yellow in the center which if I add all this up means mag iron deficiency could be soil ph to high and the plant having nutrient lock. Am I barking up the wrong tree?

Any luck? My soil ph runoff is also reading 7.4 & showing msg def.

SwoleGrow said:

Any luck? My soil ph runoff is also reading 7.4 & showing msg def.

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Well I’ve must have read 1000 posts trying to work out even whether it matters or not. The post sway from not checkin* the ph at all to incorrect watering habits. I’m a bit lost still but one thing I am doing is letting it dry out a lot more than usual and I’m lowering the ph in to the low 6’s like 6.1 to 6.2. The other thing is my utterly shite ph pen. Beginners like me start with poor quality cheap equipment and quickly realise that you get what you pay for. Hence I’ve ordered a lovely semi pro one so I can’t get the ph wrong either end. The only reason I’m so bothered about the ph is it’s the only thing I can really think that’s affecting the health due to it not taking the nutes in. But wtf do I know. I’ve only watered it once since and the new pen arrives tmrw so I’ll let you know if it goes down.

I also found this which might be helpful

Thanks bro. Same here most never even check, just make sure their inputs are ph’d correctly. I do this also though. Looking into my ladies being nitrogen deficient now.

SwoleGrow said:

Thanks bro. Same here most never even check, just make sure their inputs are ph’d correctly. I do this also though. Looking into my ladies being nitrogen deficient now.

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I’ve also just been and bought some organic molasses but for life of me I remember why. All I know is even though I think I’m doing things accurately and correctly both grows I’ve had a plant that Starts to loose something along they way. Maybe it is all down to watering and keeping that ph right.

We’ll figure it out. Will keep you posted

What kind of soil are you using? Looks like possibly the start of a potassium deficiency. What are you feeding the plants? They are starting to flower and will require increased amounts of phosphorus and potassium.

twentyeight.threefive said:

What kind of soil are you using? Looks like possibly the start of a potassium deficiency. What are you feeding the plants? They are starting to flower and will require increased amounts of phosphorus and potassium.

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The soil is Bat special mixed with about 25% biobizz light mix. The only feed I’m giving it is biobizz grow which I’ve upped a bit since I thought it might be hungry, and biobizz bloom which I’m giving at half or a bit less recommend. I also add biobizz cal mag a bit of liquid seaweed sometimes and Epsom salts. Where the hell am I going wrong?

Today I fed with grow, bloom, Epsom salts, cal mag and seaweed. The water was condition with Ecothrive conditioner to remove chlorine etc. The soil was nice and dry almost to the bottom which I tested with a moisture meter. Only gave it about 1.5 litres. The but sites and top leaves perked up nicely but I have more fading and yellowing going on below and some leaves are browning on the ends. This could all be related to watering techniques as I can’t see I’m not feeding enough.

What EC are you feeding your plants at? What are the white spots all over the leaves? Have you been misting/spraying them?

The worst thing you can do is freak out and start changing a ton of things, like adding a lot of new stuff that you usually don't use.

I don't know what type of water you have but a conditioner isn't needed unless your water contains chloromine. If you leave a bucket of water out for 24 hrs the chlorine in it will naturally dissipate.

I’m afraid I don’t have an EC meter. Ppm and ph but something I will look at if needed. Our water is quite hard and ph’s at about 7.6. The white is the light catching the dried Epsom I foliated with last week which was suggested by another member. I’ve stopped that and added the salt to the feed. Should I stop feeding al together? Should I continue letting it dry out more as it could just be over watering?