Seachem Reef Plus
$5.99
With higher amounts of Calcium, Alkalinity, and Magnesium compared to other brands. Instant Ocean is one of the most economical and cost effective salts to use for your aquarium. We have used Instant Ocean salts for over 15 years and have had amazing results with fish, corals, and invertebrates.
Instant Ocean is the #1 selling brand of salt. Although it doesn't have as high of readings as Reef Crystal mix, it is great for Fish Only systems or if you want to add supplements.