PH Problem Need Help Fast

spiked1 · May 27, 2009

I water my plants with Brita filtered tap water which has always been bang on 7 PH and so I have never had this problem before.
My plants are White Queen 5 weeks into 12/12 and grown in soil as organic as I can, but recently the leaves started looking strange, so I tested my water and it's PH6.
I added PH-Up to make it PH7 and tested the run off water, it was PH5.
Question is what is the best way to fix it before my crop is phuk'd.
Should I
give a good flush with PH7 water,
add some dolomite lime,
or just keep on adjusting my water,
or all of the above.
It's only 10 days since I flushed them with the PH6 water, thinking it was PH7.
We have had a lot of rain here lately, basically we were in drought with the dams only 18% full, now, after only a couple of months the dams are 73% full, so I guess the PH change is due to that.
It's not the greatest pic but you can see the washed out look of the leaves.
Thanks. :shock:

wallimaster · May 27, 2009

5.7 - 6.3 no more no less this should keep your plants in the proper range to prevent lockout of any nutes

spiked1 · May 27, 2009

Thanks, but the question was what is the best way to restore it to that level.
Was I not clear enough?, my run off water is PH5 after watering with PH7 :peace:

spiked1 · May 28, 2009

No one knows?? :shock:

dbo24242 · May 28, 2009

flush with 7.0 until soil runoff is 6.0

Noble Gas · May 28, 2009

Is that the PH of your resivior? Your information is confusing...

The aim here with PH is to keep the resivior within a certain window that the plants can optimally absorb nutrients. I dont know where you read that you need to maintain a PH of 7.X. Most hydro growers keep a PH of 5.7-6.3 like wallimaster said.

If your PH is 5.0 and you want to bring it to 7.0 then add more base (PH UP) in increments and maintain it by checking it twice a day and adjusting when necessary.

Find a good grow journal or tutorials on this site about water management... its been discussed thuroughly here. Good luck

shiftythunderf*ck · May 28, 2009

^^^^ listen to this guy

spiked1 · May 28, 2009

Noble Gas said:
Is that the PH of your resivior? Your information is confusing...

The aim here with PH is to keep the resivior within a certain window that the plants can optimally absorb nutrients. I dont know where you read that you need to maintain a PH of 7.X. Most hydro growers keep a PH of 5.7-6.3 like wallimaster said.

If your PH is 5.0 and you want to bring it to 7.0 then add more base (PH UP) in increments and maintain it by checking it twice a day and adjusting when necessary.

Find a good grow journal or tutorials on this site about water management... its been discussed thuroughly here. Good luck

What is confusing? I said I'm growing in soil as organic as I can, not hydro,
and I tested the run off water which is PH 5 after watering with PH 7 filtered water.
Not sure why you are confused and think I'm growing hydro. :peace:

spiked1 · May 28, 2009

shiftythunderf*ck said:
^^^^ listen to this guy

What guy? the confused guy who think the words soil and organic mean hydro?
Now I'm confused. :peace:

spiked1 · May 28, 2009

dbo24242 said:
flush with 7.0 until soil runoff is 6.0

Cool, that's what I think I will do.

That's 6 x 16 litre pots = 96 litres.
If I flush 3 times the pot size thats 288 litres.
My brita filter does 1 litre at a time, then PH adjust and lugg it all upstairs.
Damn, going to take me all day.
But I can't see any other way around it.
Thanks all for the replies. :hump:

dbo24242 · May 28, 2009

spiked1 said:
Cool, that's what I think I will do.

That's 6 x 16 litre pots = 96 litres.
If I flush 3 times the pot size thats 288 litres.
My brita filter does 1 litre at a time, then PH adjust and lugg it all upstairs.
Damn, going to take me all day.
But I can't see any other way around it.
Thanks all for the replies.

LOL! lug the pots downstairs one at a time and put them in the bathtub and just use your tub water. You don't need a brita filter... Unless you live in the city and have horrible water.

Dolomite lime just lowers pH doesn't it? or provides a buffer so it doesn't go up higher? I don't a lot about mixing my own organics, I'm using some Happy Frog soil though and its awesome, added a little extra perlite to it and don't plan on feeding the plant until its flowering. Definitely one of the faster healthier looking mediums.

FilthyFletch · May 28, 2009

lol I like the guy that thought you had a hydro grow then the dummy who co signed for him saying listen to him. these 2 are the kind o guys who follow the gps units right off the cliff lol

itsgrowinglikeaweed · May 28, 2009

FilthyFletch said:
lol I like the guy that thought you had a hydro grow then the dummy who co signed for him saying listen to him. these 2 are the kind o guys who follow the gps units right off the cliff lol

LMFAO
Here is a good bit on lime and soil PH. It refers to a tree orchard but the principles are still the same. I learned alot from it and I dont have PH problems any more. (knock on wood)
http://www.ncw.wsu.edu/treefruit/soil/lime.htm
Happy growing! :peace:

spiked1 · May 29, 2009

Interesting read itsgrowinglikeaweed. :peace:

Has anyone got a recommendation on digital PH testers, or what are the best to use, I have 1 for measuring Pond Water which is what I tested my run off water with, it's a liquid 1, add 4 drops to a vial and match the colour chart to get PH readings.
I also have a couple of cheap ones that dont use a battery, but everything is PH 7 with them, I even put 1 in a glass of vinegar, still PH 7.? :peace:

spiked1 · May 29, 2009

Being colour blind I have a lot of trouble reading the leaves for nutrient problems,
not to mention the colour coded PH Tester.
So here a some pics I took this morning.
Plus reps to everyone who has helped. :hug:

itsgrowinglikeaweed · May 29, 2009

Milwaukee 600 ph 20bucks on ebay.
Easy to use, inexpensive and digital accuracy. Can't beat it.

itsgrowinglikeaweed · May 29, 2009

baking soda = PH up, but be careful, trying to change the PH too fast is no good either.
Baking soda is fast acting, lime is slow acting.

spiked1 · May 29, 2009

itsgrowinglikeaweed said:
Milwaukee 600 ph 20bucks on ebay.
Easy to use, inexpensive and digital accuracy. Can't beat it.

I almost won one of these a few days ago, got sniped with 10 seconds to go, they're $85 new here. Maybe next time. :peace:

itsgrowinglikeaweed · May 29, 2009

85 bucks!? Buy it now for 21. > http://cgi.ebay.com/Digital-Milwaukee-pH600-pH-Tester-Meter-Pocket-Pen-600_W0QQitemZ380124537302QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item58813021d6&_trksid=p3286.c0.m14&_trkparms=72%3A1205%7C66%3A2%7C65%3A12%7C39%3A1%7C240%3A1318%7C301%3A1%7C293%3A1%7C294%3A50

Mysticlown150 · May 29, 2009

FilthyFletch said:
lol I like the guy that thought you had a hydro grow then the dummy who co signed for him saying listen to him. these 2 are the kind o guys who follow the gps units right off the cliff lol

lol that shit was funny as hell :peace:

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