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  #11  
Old 10-14-2019, 07:01 PM
Dorra Dorra is offline
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Thanks a lot Roberta. Now I am wiser thanks to You. Thanks!

Out of curiosity I'll measure the pH tomorrow with both fertilizers ... coming back

Last edited by Dorra; 10-14-2019 at 07:10 PM..
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  #12  
Old 10-14-2019, 07:10 PM
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Show photos when it blooms again! "Before" and "after" photos are interesting!
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  #13  
Old 10-22-2019, 05:08 AM
Dorra Dorra is offline
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Now I measured ...

R/O water itself has a pH of 6,60
mixed with RainMix to 200uS the pH drops to 6,30
mixed with Iguana to 200uS the pH drops to 5,30

Other results from friend of mine, are as follows:
Distilled water - pH 6,60
Distilled water + 3 ml Iguana 4-3-6/liter - pH 4,55

Rainwater - pH 5,86
Rainwater + 3 ml Iguana 4-3-6/liter - pH 4,76

Last edited by Dorra; 10-22-2019 at 05:11 AM..
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  #14  
Old 10-22-2019, 12:40 PM
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REALLY interesting. That's a big pH difference. And that increases the suspicion that the color is pH sensitive. It could either be pH itself (orchids as indicators???), or could be changing the plants's uptake of some nutrient.

This has inspired me to do a little experimenting on my Cleisocentron gokusingii ... the blue (true blue, not coerulea) has been quite pale the last several bloomings. Summer heat tends to do that, but even winter I haven't been getting the good color. I am going to try mixing a little tap water into its fertilizer water (raises the pH from 6 to 6.9) and see if I can get the color to be better. We'll know in about 6 months.
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  #15  
Old 10-23-2019, 03:32 AM
Dorra Dorra is offline
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Thanks Roberta... I learn a lot from this tread

An please come back and tell about Cleisocentron gokusingii

Last edited by Dorra; 10-23-2019 at 03:38 AM..
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