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I am a newbie to growing. I have a hydroponic grow how do I lower it without using pH down? I had a pH of 6.2 and tried adding straight water and that didn't change anything. I tried adding more of my nutrient mix and that just made the pH go up to 6.3. I'm at a loss. The plants were just added yesterday so sure don't want to lose them. Have been having a very hard time with growing.
you could use vinegar as a quick substitute... it is a very effective ph down, but not sure if it would be good for a hydro grow long term since I have no experience in that area. I like it in my soil garden as I tend to go with natural and cheap solutions to my gardening needs but again, I don't want to wreck your hydro setup with bad advice either.
Why don't you just go get some Ph down? It's pretty inexpensive.
you didn't say where you get water from... if tap water , let that water sit for a day or two before you try to check or adjust.
vinegar will bring it down and not do any harm. ( 1 tbs : gal will normaly bring ph down 1 point )
ph down is also harmless , either way.. :)