help with low ph after adding nutes

growing85

Member
Like the title says after adding nutes (Canna terra vega) to some distilled water I bought from walmart the ph drops from about 7.4 to about 4.3. Directions said to add 19 ml to 1 gal.... I added 5ml to start off with.I even dumped some water out and added some fresh Di water.Is this normal. Should I water with this anyway. Ph tester came with some 7.0 ph buffer.... Can I add this 2.
 
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