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Water questions and your advice
To start at the beginning, I rescued a phaleanopsis hybrid from a
relative. I don't know exactly what caused the problems with the plant, probably a nasty combination of watering with cold softened water and being on a drafty windowsill. The leaves were limp with a leathery appearance. I brought the plant home and leached it with warmed filtered water at my sink. It still lost the lowest leaf, but the other three have firmed up considerably, and there is a new leaf growing. A few days ago I found an aquarium test kit with water amendment treatments at an outlet store I scrounge around in occasionally. It got me thinking and I have done some research on the subject of water since, and bought a packet of "Jungle" test strips that test for nitrate, nitrite, alkalinity, hardness, and PH. For my orchids I use a fertilizer mix that involves 1 lb. of 20-20-20 dissolved into a 64 oz container and 3 tsp. Super Thrive. I use roughly 1 tsp per gallon of water from this mix when I feed the orchids (if my calculations are correct it is 50% of the recommended strength). I also mix into a 2 gallon sprayer or 5 gallon bucket and let the water sit overnight or a few days to achieve room temperature. BTW, the water is filtered in my plant room (a recent addition). The PH is still high between 7.2 and 7.5. Is it better to lower the PH with cider vinegar or distilled white (5% acid)? I have a varied collection. Most of the phals are still in bark, but need repotting. Haven't decided yet what mix to repot them into, most have bloom spikes and think I will wait until May of June. Most of the cattleyas are in CHC, Paphs and Phrags are mainly in CHC and coir (some in Aussie Gold). I also have a few misc. in baskets, mounted, and S/H as a test. I am trying reduce stress during the winter, and amending the water quality seems to be the best way. Too many different orchids, I know, but am still learning. Previously I moved the orchids outside in the summer and inside during the winter. They hate the winter. It's probably a combination of missing the rain, harder water, too high PH, and difficulty in properly leaching. My main objective was to keep them alive until I could move them out again. This year I am considering keeping them in my growing room for the summer. Thanks, Nancy G. |
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