The good:
@40 days my plants are vigorous, they got (probably the last) prune and defoliation. And I tried giving them a blast of CO² from the sodastream.
The bad:
Amazon . Litmus paper and a freshly "calibrated" ph pen (yellow) in some solution.
One side has a drop of pH down....the other side has tap water which is usualy around 7.4
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