Reef Status™: Magnesium Four kits in one! Tests for magnesium through a titration based procedure in increments of 12.5 mg/L. Tests for carbonate alkalinity, borate alkalintiy and total alkalinity in 0.1 meq/L resolution through a titration based procedure. The kit resolves borate from carbonate and, along with magnesium, this presents a clear picture of the tank's buffering capacity as well as a very reliable determination of the critical carbonate content required for coral and coraline growth. Each kits can perform 75 determinations for each test.

Multitest: Marine Basic This kit combines the Marine pH & Alkalinity, Ammonia and Nitrite & Nitrate kits into one kit.

Multitest: Reef Special This kit combines the Phosphate, Silicate, and Iodine/Iodide kits into one kit.

Multitest: Ammonia This kit measures total (NH3 and NH4+) and free ammonia (NH3 only) down to 0.05 mg/L and is virtually interference free in marine and fresh water. Free ammonia is the toxic form of ammonia (vs. ionized Ammonia NH4+ which is non-toxic) and thus it is much more important to keep an eye on the level of free ammonia in your system. This kit is based on the same gas exchange technology that is used in the Ammonia Alert™ and thus is the only kit on the market that can read levels of free ammonia while using ammonia removal products such as Prime™, Safe™, AmGuard™ and any similar competing products. The other kits (salicylate or Nessler based) determine the total ammonia by raising the pH of the test solution to 12 or greater. At this high pH all ammonia removal products will breakdown and rerelease the ammonia, thus giving you a false ammonia reading.

MultiTest: Marine ph & Alkalinity™ features a unique dye that has a pronounced color change between 8.0 and 8.3, making it the easiest kit on the market to read in that critical range. Alkalinity may be read from the same sample in 0.5 meq/L increments

MultiTest: Nitrite & Nitrate™ This kit measures nitrite down to 0.2 mg/L and nitrate down to 2 mg/L in marine or freshwater.

MultiTest: Iodine & Iodide™ This kit measures iodine or iodide to less than 0.005 mg/L. Seachem stands alone in offering this important test to the reef aquarian.

MultiTest: Iron™ This kit measures iron in freshwater or marine water to less than 0.05 mg/L. Can also measure chelated iron.

MultiTest: Phosphate™ This kit measures inorganic phosphate down to 0.05 mg/L, producing a unique easy to read yellow-green-blue color range in marine and freshwater.

MultiTest: Silicate™ This kit measures silicates down to 0.5 mg/L in marine or freshwater.

Ammonia Alert™ is an innovative color device for continuously detecting and monitoring toxic free ammonia. A sensor changes reversibly from yellow to green to blue, relative to the ammonia concentration. No test kits, chemicals, or procedures are needed. The device detects less than 0.05 mg/L (ppm) free ammonia and alerts you to the #1 killer before any sign of stress. It lasts over a year and replacement sensors are available. Marine or freshwater use.