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Baking Soda to lower pH
Here I go again:
I've often heard Baking Soda will lower a high pH. I'm wondering just how MUCH BS a pun? is needed? My lily pond is 3 yo 1,000 gallon EPDM with 6 fantail goldfish. I've added enough baking soda recently that the KH read 280/ppm today after adding 4 cups of BS. The pH is still reading over 9.0, and I added 2 more cups this evening. At what ppm is the KH detrimental to the goldfish, or is safe as long as there is more liquid water than solid BS in the pond? At what ppm will the pH dropped, or is this really an old fisherman's tale? This pond has concrete block surrounding the top, but it is 3 yo, and I haven't had this bad a time with pH the previous years, usually a few treatment with M.acid has gotten it under control. This year I've used a whole gallon on it (~2 cups/time). Only brings it down for a week or so. The other odd thing, at least I find odd as I'm always preaching if your water hyacinths are dying check the pH. Well the water hyacinths are green, not growing much, but green.... and so is the water, but that I don't find unusual considering the pH. I'd also like to mention the duckweed is growing great in the block holes, I guess a high pH doesn't bother them. So what do you think? ~ jan (Do you know where your water quality is?) |
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