Most commercial salt mix manufacturers boast of containing the 70+ trace elements/minerals that are found in the ocean. Supplements are sold for just a handful of those.
Even with over skimming, use of charcoal and poly filters, macro algae and LR
, the water will still not be as pristine as a freshly made batch of NSW
. Also, all that skimming and filtering will remove some of those trace elements.
A bucket of salt that makes 200 gallons of mixed NSW
goes for around $50.00. The cost for making RODI
water is pennies per gallon. The cost of trace supplements is quite high by comparison.
's are the way to go in both FW