So today I recorded my Strawberry growing. Some growth can be seen in the middle.I also got the pH strips! Yay! Just in time. It took 14 days to Slovenia which is awesome!
I mixed in a table spoon of vinegar (alcohol vinegar, 9% sourness) to the solution in the morning. As you can see, the solution has pH of about 6, which is in the pH range hydroponic strawberries should be grown (5.5 - 6) (source).
There is one problem though. I'm not sure how accurate this is, since tap water appears to be 8 or 9 on the pH scale which looks absurd. I may test this pH strips tomorrow in some home made buffer solutions.
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