Rust spots appearing during flowering

[sickzone]

I received my ph tester today and calibrated it.

My ro water that I have been feeding with read 9.6
My tap water read 8.6.
A jug of local store purified water read at 5.7

I had a batch of tea ready, should I throw that out.
Can I take a reading of the tea with the ph tester?

Can I mix the ro with bottled water to get a better ph water.

I don't have a ppm tester.
Should I put that on the list to buy as well.

What should I now do before I make things worse?
Any thoughts appreciated.

 

[Proph]

I received my ph tester today and calibrated it.

My ro water that I have been feeding with read 9.6
My tap water read 8.6.
A jug of local store purified water read at 5.7

I had a batch of tea ready, should I throw that out.
Can I take a reading of the tea with the ph tester?

Can I mix the ro with bottled water to get a better ph water.

I don't have a ppm tester.
Should I put that on the list to buy as well.

What should I now do before I make things worse?
Any thoughts appreciated.

Yes you need a ppm meter.. Compost teas usually don't have an npk ratio so ph is irrelevant. Never heard of anyone ph'ing a compost tea.. But what you made is not called a compost tea... You added dry nutrients and molasses to water.. So I would ph that mixture. NLS doesn't list the npk ratios for GFP, so it's hsrd to say what to ph it to.. Yes you can mix the different waters.. But unless you're good at math and chem ratios, you'll still need to adjust the ph of the mixed water..

The issue you're having is more than just the ph of the water unfortunately.. The ph of the 2 different mediums you are using will be an issue as well... Coco loco is amended coco.. Nls is amended soil.. I've yet to see them work well together.. I'm not even sure where the trend started, but it's not going well. No company makes or sells a mix of soil and coco..

You need to check the ph of your run off.. And when you get a ppm meter you need to check the ppms of your run off. If you plan on continuing to mix different mediums together, you'll also need a soil ph probe to check the ph of the medium. I would use the plain old local 5.7 water for now, until you can get some ph up/down and a ppm meter..

 

[sickzone]

Yes you need a ppm meter.. Compost teas usually don't have an npk ratio so ph is irrelevant. Never heard of anyone ph'ing a compost tea.. But what you made is not called a compost tea... You added dry nutrients and molasses to water.. So I would ph that mixture. NLS doesn't list the npk ratios for GFP, so it's hsrd to say what to ph it to.. Yes you can mix the different waters.. But unless you're good at math and chem ratios, you'll still need to adjust the ph of the mixed water..

The issue you're having is more than just the ph of the water unfortunately.. The ph of the 2 different mediums you are using will be an issue as well... Coco loco is amended coco.. Nls is amended soil.. I've yet to see them work well together.. I'm not even sure where the trend started, but it's not going well. No company makes or sells a mix of soil and coco..

You need to check the ph of your run off.. And when you get a ppm meter you need to check the ppms of your run off. If you plan on continuing to mix different mediums together, you'll also need a soil ph probe to check the ph of the medium. I would use the plain old local 5.7 water for now, until you can get some ph up/down and a ppm meter..

Thankyou Proph,I went with coco loco after reading this page.

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I watered with the 5.7 bottle water and run off ph was 7.19


Thanks again

 

[low_and_slow]

Hey before you do anything else, definitely calibrate and then double check your pH pens. RO water should be at a near perfect 7, if you're seeing 8's something is way wrong, most likely your meter.

 

[sickzone]

Hey before you do anything else, definitely calibrate and then double check your pH pens. RO water should be at a near perfect 7, if you're seeing 8's something is way wrong, most likely your meter.

thanks for the heads up.
it made me do a bunch of tests this morning to verify my readings.

first test was test my ro straight from the tank 9.73
tested ro that sat in jug overnight 9.04
tested a bottle of alkaline 88 supposed to be 8.8 on bottle, my reading was 9.4
then tested a bottle of nestle pure life.
went to website test aqua and they tested at 7
my test was at 7.05
also tested another jug of cheap local store bottled water that i used last night 5.8

so after all that i believe i am getting an accurate reading.
i did calibrate it before using last night.

my problem is that i also assumed my ro water would be at 7.
i forgot that my 6th stage filter is an alkaline filter which adds minerals.
rep said it will add an extra .5 to 1 ph to your tap ph.
so the crazy high ph number i have made total sense when i saw it.

learned a valuable lesson not to assume and to test to verify.
hope some fellow first time growers learn from my mistake.

 

[low_and_slow]

But did you use reference solution designed for calibration? Sounds like you tried out a bunch of stuff, but didn't mention using the correct tool for calibrating a pH meter...

 

[sickzone]

But did you use reference solution designed for calibration? Sounds like you tried out a bunch of stuff, but didn't mention using the correct tool for calibrating a pH meter...

yes,i used the solution that came with the apera ph60 7,4 and 10.01

 

[Tom Bombadil]

I use a water only technique and it does not include natures living manure
Some people do ok with it but I wouldnt use NLS with coco
The issue is likely that you're using the layering technique and most likely the NLS hasn't had enough time to break down properly.... I say this because i used it a long time ago in the same manner and it did the same exact thing to my plants. With the amount of folks Ive seen with this same issue using the same NLS and layering technique I would guess that's the problem..
If you're going to use NLS, next time mix it into your soil and water the containers for a week with molasses mixed with grokashi or something before planting anything into them... then get a quality top dress mix like build-a-flower from build a soil.com to get through flowering..

The necrosis isnt going to kill your plants.. Get some earth worm castings and make a tea then add some molasses and powdered lime like 1 tsp a gallon..to that and water with it...after a couple weeks, the spots should stop(only water with the lime added two times) . At least it did for me a few years back. GL

 

[Tom Bombadil]

Hey before you do anything else, definitely calibrate and then double check your pH pens. RO water should be at a near perfect 7, if you're seeing 8's something is way wrong, most likely your meter.

Ro water has no buffer and will take on the ph of anything combined with it... Poured into an unbalanced soil, it takes on the ph of that soil... My point is that phing ro water or caring about the ph of ro water in an organic grow, in my opinion is pointless as the water itself will not affect the ph in the growing medium unless a buffer like salt fertilizers or a calmag supplement are added to it. I could be wrong though

 

[low_and_slow]

Ro water has no buffer and will take on the ph of anything combined with it... Poured into an unbalanced soil, it takes on the ph of that soil... My point is that phing ro water or caring about the ph of ro water in an organic grow, in my opinion is pointless as the water itself will not affect the ph in the growing medium unless a buffer like salt fertilizers or a calmag supplement are added to it. I could be wrong though

You're right about it being a solvent that will pull minerals and salts out of the soil, but for that reason it's not a good choice for growing plants. I know a ton of people think differently, but this interview convinced me to just use tap for horticulture: