Most test kits cannot measure at these levels and if they do, their accuracy is dubious. Our Copper test truly measures total Copper, including that which may be chelated with citrate, EDTA, or other unnatural sequestering agents. Most kits provide free Copper concentrations only. This is a misleading measurement. Iron Iron is an element that is often overdosed in a closed system.
Elevated levels can cause undesirable algal blooms and create an imbalanced micronutrient profile.
Natural reef waters contain low ppb levels of this element as hydroxy complexes. Most kits that measure Iron suffer from interferences with Copper and Cobalt. Our method measures total Iron, in any form or complex that it may exist in. Iodine Iodine is probably the most controversial element in closed marine systems. It is very difficult to accurately measure and exists in several forms in seawater.