Hey HawaiianHydro,
here are a few pointers to help you be a little less confussed.
1) pH is far more important then ec/ppm and should never be disregarded in any size reservoir.
2) visual inspection of your plants is HUGE! your plants will tell you more then what a ec/ppm meter can.
3) top off your reservoir with plain fresh water, between regular reservoir changes, every 10 to 14 days depending on plant stage and metabolism.
4) yes, with experience comes knowledge. available to all
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