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Added washed red lava rock to grow bed this afternoon. Also ran first pH test of the water. Looks to be in the 8 range. Will monitor this week to see if adding the lava changes the level.
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Hard to know if the rock affected you pH if you didn't test the water's pH before adding the rock.
Hard water is really common so starting with a pH of 8 is not uncommon. Once the system cycles up the pH should come down but it might be worth airing some tap water out for a day and then testing your source water's pH just to know what you are starting with.
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