thanks for all your replies. I went with the PM 422 from J&L about 3 weeks ago. very easy to set up dont know if i got it dialed in correctly but everythings seems to bloom and looks health so i left it as is. have it dialed in as 16 bubbles/min and about 150 drip/min. ca 400-420 and dkh 14 is this too high? if so how do i lower the dkh? more co2 or more drips?
thank you
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