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#1
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Water quality
Trying this again, sorry if it comes through twice!
I finally got my hands on our water analysis. Can anyone tell me what I need to do to the water to optimize the quality for orchids? In exchange I am offering this handy page which could be of help to the person who understands all this: http://www.lenntech.com/tds-ec_engels.htm Thanks in advance! 13.07.2004 pH 7,8 Conductivity(µS/cm) 420 Hardness°D 14,56 Hardness°F 26,0 Alkalinity mg/l CO3 0 Alkalinity mg/l HCO3 289 Nitrate mg/l NO3 10 Chloride mg/l Cl 2 Fluoride mg/l 0,20 Sulfate mg/l SO4 11 Lead µg/l Pb 1 Arsenic µg/l As 1 Selen µg/l Se 1 Antimony µg/l Sb 0,5 Iron µg/l Fe 4 Copper mg/l Cu 0,1 Zinc µg/l Zn 6 Manganese µg/l Mn 4 -- Reka This is LIFE! It's not a rehearsal. Don't miss it! http://www.rolbox.it/hukari/index.html |
#2
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Your water is a little hard and pretty alkaline. Your paphs and
phrags probably enjoy it. Stuff with smaller, finer roots won't take to it well, based on the hardness. A lot of it depends upon what you're trying to grow. Your best bet would be to batch prepare your water; add your fertilizer, re-check your pH, and maybe throw in some Epsom salts (magnesium sulfate) to help wash out some of the calcium carbonate buildup now and again with a little ol' cation exchange. Do you see any root tip burn as it is? The address in the header isn't valid. Send no email there. -AJHicks Chandler, AZ |
#3
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Aaron Hicks schrieb:
Your water is a little hard and pretty alkaline. Your paphs and phrags probably enjoy it. Stuff with smaller, finer roots won't take to it well, based on the hardness. A lot of it depends upon what you're trying to grow. Your best bet would be to batch prepare your water; add your fertilizer, re-check your pH, and maybe throw in some Epsom salts (magnesium sulfate) to help wash out some of the calcium carbonate buildup now and again with a little ol' cation exchange. Do you see any root tip burn as it is? The address in the header isn't valid. Send no email there. -AJHicks Chandler, AZ Hi, Aaron! Have you been lurking, or do you just seem to sense when a water question comes up ? ;-) Thanks for answering. Actually, not much root burn. It seems to affect my oncidiums the most, I guess. The ones exposed to air turn brownish black. If it is hard and alkaline, would a certain type of medium help? I was reading that article on Phals by Alan Koch that Sue Erickson was kind enough to find for a few of us (Thanks, Sue and a big hug!) and he said that it is beneficial for the Phals to put dolomite lime and magnesium into the sphag they use to bring the pH up. So, seeing as I am in the middle of the Dolomites and our water comes out of them, maybe sphag would be the medium of choice for me? (Until I get a greenhouse and an RO system??!!) Which media would be a worst case scenario for hard water? -- Reka This is LIFE! It's not a rehearsal. Don't miss it! http://www.rolbox.it/hukari/index.html |
#4
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Hi, Reka. Just not much to write these days, I suppose.
If you're not getting root burn or loss of root tips, and the growing tips are long, green, and otherwise healthy, what's the problem? In terms of specific media recommendations- media that will absorb more water will present more problems with hard water. For example, a sponge that holds 10x its weight in water will have a high capacity for holding water, which then evaporates and may deposit salts. A marble or waterproof pellet will have most or all of the water run off, and leave almost no salts to preciptate. This may be ameliorated through the use of magnesium sulfate, which will deal with calcium carbonate, one of the most insoluble salts, through cation exchange and solubilizing it. The other way of dealing with this is never letting the media go to dryness, so salts don't "fall out" of solution (making them much harder to re-dissolve). Of course, your plants have to be able to tolerate this condition- not all orchids will enjoy being feet-wet all of the time. The address in the header is not valid. Send no email there. -AJHicks Chandler, AZ |
#5
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Aaron Hicks schrieb:
Hi, Reka. Just not much to write these days, I suppose. If you're not getting root burn or loss of root tips, and the growing tips are long, green, and otherwise healthy, what's the problem? Okay, thanks. I was just worried since I have been fertilizing regularly that it might present some problems with salt buildup. -- Reka This is LIFE! It's not a rehearsal. Don't miss it! http://www.rolbox.it/hukari/index.html |
#6
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Reka........rain water!!!!!
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#8
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Reka wrote:
schrieb: Reka........rain water!!!!! My ultimate goal, when we have our own house, will be a rain water system for toilet and plants in a passive house, but now we live in a condominium. A rain water barrel on our balcony? My neighbors would never agree to it. :-( They don't have to know. Just put a table top on a barrel. They will think it's an odd patio table. Only you will know it's full of water. Now you just have to figure out how to get rain water into a small hose that leads to your "table". Steve ;-) |
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