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Highflyer
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Geraniol
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Hi all my second grow is well under way and my leaves have just started to show these markings, have been following the biobiz schedule for feeding at 50% strength, these were planted 9th dec and are well into flower. Had no issue until the last two days and haven’t done anything different.

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soil grow using bat mix 

PH is 5.6 generally

7E278F11 4E77 4A09 9B1C DEDD08E9F4F9

 

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Macky
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Alpha-Pinene
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ph is too low mate, you need to be around 6.5 in bat mix. probably lock out because of it. give them just a plain water feed at 6.5, and the watering after add some feed, and also ph that to 6.5

This should stop the issue Smile

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Highflyer
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Geraniol
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Thanks Macky, I really seem to find it difficult to get the Ph correct,  I’m always up/down and never get it where I want it.

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Zombie Nation
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Posted by: @highflyer

Thanks Macky, I really seem to find it difficult to get the Ph correct,  I’m always up/down and never get it where I want it.

Dilute the PH up/down with water before adding, easier to get it exact 😉

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twisted1
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Limonene
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My water usually runs around A PH of 8, I generally mix several gallons for my auto watering system. Normally I start with 10 drops and see how much change this creates in the PH of my Water, Lets say this changed my PH by .2 and I need to go another 1.2 PH down  requiring 60 drops Ill put in Half and recheck then add half of what I expect to get me to the final PH and recheck PH, Doing it this way has helped me in getting my PH were I need it to be. 

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Alpha-Pinene
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using neat ph down, it will only take like 1 drop to change 1 litre from 6.0 to 4.0 lol its very strong

In  my 15l bucket, id use 3 drops to bring my water from 6.4, down to 5.8, and sometimes that can hit 5.7 lol

Like ZN said mate, Dilute some, get 990 ml of water, and add 10ml of ph down to make a litre. This will make it so much easier to find the right bance Smile

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twisted1
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Limonene
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@macky

Wow  I use General Hydroponics PH  no where near that strong. or I use lemon juice, That stuff would create havoc with me lol

 

 

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Alpha-Pinene
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yer think mine is vitalink, im not sure. Too powerful mate, but you get used to it. Need a pipette to use it properly. Otherwise, dilute it... or use lemon juice 😉

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dok.gonzo
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@macky

definatly would work good in an automated dripper system tho. us clumsy humans tho.... lol

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Limonene
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GH is all Ive tried other than natural stuff. I also use a pipette and slowly get it where I need it to be, after hearing this I can understand where people have issues over shooting their mark.

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