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Paph problems
Wendy wrote:
So if I wanted to try this, I would first check to see what the pH is. Would I do this after adding the fertilizer? Is 6 a good number for orchids? Cheers Wendy Always check the pH both before you add acids (or bases), and after. pH test strips or a cheap meter are a necessity for growing orchids. I wouldn't ever rely on set amount of acid, it depends on the concentration and composition of the fertilizer and the water. Check before - so you have an idea of how much to add. Check after - so you know if you over or under corrected. For what it is worth, vinegar (If I recall about 8% acetic acid) is fine to lower pH. White or cider makes no difference. Lemon juice (containing citric acid) works fine too, and smells nice. You need more lemon juice... Muriatic (hydrochloric) acid is fine but a little too concentrated to be safe. You can safely drink or touch vinegar and lemon juice (although you should probably not bathe in it or spend too much time soaking in it...). When I used Dynagro, I always had raise my pH. I used 10N NaOH (sodium hydroxide) - but it didn't take much. Most people probably don't have access to pure NaOH, but lye would work. Or you can just buy the various 'pH-up' and 'pH-down' products on the market. -- Rob's Rules: http://www.msu.edu/~halgren 1) There is always room for one more orchid 2) There is always room for two more orchids 2a. See rule 1 3) When one has insufficient credit to purchase more orchids, obtain more credit 4) Repot! (by popular request) |
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