Well I do more than just place the open container near the air flow. I coat the inner ducting with the stuff.
I don't know what you mean by that. Sorry to keep de-railing your journal. Blog article please!
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Well I do more than just place the open container near the air flow. I coat the inner ducting with the stuff.
He smears the gel on the inner walls of the ducting.
About the pH, research has lead me to discover that rockwool has a natural pH of 8.0 and soaking it in pH 5.0-5.5 is mandatory. A lot of the other choice mediums such as coco is like 6.0. Most rock based mediums (aside from RW) are neutral. There has got to be a rock somewhere on Earth that has a nice low pH that can be used in the RW to make it easier to work with. I am not implying that RW is not "Simple", just that it's high natural pH makes a recirculating res (especially as small as mine) much harder to balance. If I dial into 5.8, as soon as it feeds and drains back down, the spike goes to a minimum of 6.2. If left at that value for another feeding, it climbs yet again. The thorn in my back now is that if I keep lowering the pH with DOWN, it shocks the bennies and prolly kills a lot of them. If I leave it alone, by the 3rd feeding, I will likely be up around 7.5. Damned if I do, damned if I don't. Which is the lesser evil?
Also learned that in making rockwool, rocks are melted down and spun into the end product much like making cotton candy. I'm gonna look for a "How It's Made" of RW to see the process, hope it's out there. I am assuming that b/c they produce this product for growing smaller leafy plants, that they have already tried to use materials with lower PH, but for whatever reason they agreed on their current recipe. Will have to look into that. It was suggested to me that veg plants produce alkalinity in the root zone and flowering plants make the zone more acidic. If this holds to be true, maybe starting the grow in coco until the transition, then simply repot into RW cubes?
As the majority of the pH discussion happened in this thread, this is why I posted it here.
Just on the whole ph topic. i recently started using Advanced Nutrients ph perfect 3 part system. I have to say i was skeptical but my plants are loving it. i have 10 soil plants, 40 rockwool plants. 8 DWC buckets and 20 coco plants running it and they all look amazing! The only real issue is with the soil, it seems to be more sensitive to the strength of feeds. Ive just flipped the last of the plants using PH perfect, ive got some plants running AN big bud and over drive as boosts, some running Dutch pro as a boost and some runnin blUe PlAnEt nutes vitabloom. No nutes have been ph adjusted at any point. So far the PH perfect and Dutch pro Explode combination is working best in every media, followed by vitabloom and fianlly the big bud.
Anyway the point is PH'ing will be a thing of the past before long as nutes are chelated differently and available for uptake in a much broader range. I have the first of the plants finished on 16th dec and if there are no probs i will be switching permanently to PH perfect base nutes, it saves loads of hassle.
Just food for thought.
Capn, DO IT, I dare you (and excuse my ignorance for not knowing what movie that GIF is from)
Whhhhhat?! Silence of the Lambs! It's a great movie. Watch it tonight! I will, too. We can have a movie date.
Here are some tips for you man:
1.Check the temperature of your solution, it should stay the same temperature all the time else the pH fluctuates.
2.Don't use any organic products.
3. On rockwool: soak 24hours with pH 5.1-5.2(never below 5.0 it ruins your rockwool).
4.Your medium temperature should be the same as you nutrient solution temperature.
5. always use a lid on your resevoir.
i got some more tips,
but better first try this
good luck man
if that doesn't stabalize your pH
1. The ph is relative to the temperature.
When the temperature drops the pH drops as well.
3 i don't know exactly whats ruins you rockwool but that's what all the suppliers reccomending.
i think it might has something to do with the rockwool disolving at low pH.
4. if you have a sterile invironment then there are no bacterias.
You also dont need bacterias or myco's if you only feed the plants minerals.
And use hydrogen peroxide (H2O2) that kills bacteria and fungus and adds extra oxygen to your water.
So if you want your Ph to be stabilized.
The temperature of your medium and the temperatures of your resevoir(where u measure the pH) must be the same.
Always above 18c and below 23 (21 works best for me)
I hope that covers your questions.