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G
Oyster shell helps but never can balance completely. When a root contacts an acidic piece of bark it's acidic. But the water/fertilizer...
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I don't like any of the modern bark choices. That's why I'm using non organics now.
If you must use for ark add a lot of oyster shell...
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Consider checking your pH. Fir bark is very acidic. Possibly low enough to kill phrag roots. For bark is listed as having a pH of...
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G
Your mix of medium fir bark charcoal and hydroton will work better. I'd recommend using at least 50% hydroyton.
My upcoming batch of...
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It's possible the roots are dieing from the salt/pH problem with the eucagenera mix. The osmocote could be releasing too much fertilizer...
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Did you add the osmocote fertilizer or did it come with it? It could be creating a salts problem in the media with your infrequent once...
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The mix looks way to dense and moist. Consider reporting into leca stone. Use semi-hydro style pots with side drainage holes keeping all...
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Have you said what your substrate consist of, I've not read the whole thread? If you're watering only once per week and roots are...
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1223.4 FC for 12 hours a day is a good starting point.
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What time does the sun move away? To know the the total hours of full sun hitting the plants.
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How many hours per day do they receive full sun?
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G
With your 2500 FC on for 14 hours the DLI calculates to 25.0. five times more than the plants are going to use.
Here is a phrag...
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At 14" from the lights it measures 860 FC. The DLI is 6.90 with 12 hour lighting. I think phrags need less than a DLI OF 5.0. that would...
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How wide is your grow area? I'm using 3 tubes covering 30" width.
Also in my opinion 12 hours of light is correct for phrags. The...
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What was the distance from the light to the light meter and how many light tubes are above the meter?
My Barrina tubes don't emitte 2500...
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