The importance of trace elements
By trace elements we usually mean elements that are present in natural seawater in a concentration lower than approx. 1 mg/L or ppm. Some of these elements are essential to make many biological processes possible. Manganese for instance is essential for photosynthesis and many biochemical reactions associated with it. Some organisms require iron to absorb essential nutrients. Cobalt is essential for the formation of several coral pigments. Zinc is, like manganese essential for photosynthesis and is also essential for the formation of calcium carbonate by corals. These are just a few examples. Our research has shown that some trace elements are depleted very fast (e.g., Manganese) while some are depleted very slowly. An example of a trace element hardly depleted is molybdenum. Despite this many trace element supplements contain significant amounts of molybdenum. This results in far too high molybdenum concentration stimulating undesirable Cyanobacteria growth. We therefore refrain from adding molybdenum to our supplements.
About Trace Hard
Our research has shown which trace elements are depleted and at what rate. Although every aquarium is different, we succeeded in designing trace elements supplements which add sufficient trace elements to make corals thrive yet avoiding overdosing. The largest difference between trace element usage is between hard corals and soft/leather corals and coralline algae. We have therefore designed a trace element mix for hard corals (Trace Hard™) and one for soft/leather corals and coralline algae (Trace Soft™). Both can be combined according to the approximate ratio of the aquarium inhabitants. In this way a very close to perfect formulation of trace elements for different aquariums have become available.
Some other requirements
Since addition of iodine is impossible without degrading this supplement, all forms of iodine are omitted. Our Natural Iodine™ is recommended to complete the full range of trace elements.
Dose 5 ml per 100 liters (25 gallons) once a week. When combining with Trace Soft the total dosage (ml Trace Soft + ml Trace Hard) should not exceed 10 ml per 100 liters (25 gallons).
Keep out of reach of children. In case of contact with eyes rinse with plenty of water. Only for aquarium-hobby use. Not for human consumption (directly or indirectly)!
Cobalt, Zinc, Iron, Manganese, Copper, Vanadate, Fluoride, Barium, Selenate.
Product Manuals & Documentation
Salifert is a Holland base company that produces top of the line test kits as well as tank additives and foods for marine and reef aquariums.
We ship 99% of the products we carry for free within the contiguous United States using a mix of economy methods including USPS First Class Mail, SurePost and UPS Ground. Your order will arrive in 5-7 business days.
Over 90% of our members receive their orders within 2 business using UPS Ground. Upgrade from free economy shipping to UPS Ground for only $4.99—or spend $299 and we’ll upgrade you automatically!
Expediated shipping services are available for most products if you are in a hurry. Get guaranteed delivery in 2 business days, 1 business day, or next day by 10:30 am. Costs vary by location.
Same-day shipping is available Monday-Friday for most products—place your order by 10 am PST. Pre-ordered and back-ordered items do not qualify, nor do drop-shipped, live, or frozen shipments.
Learn More About Shipping
Return any new and unused item within 60 days for a full refund. Having difficulty with a product? Contact us to speak with an aquarium expert. If you need a replacement, fill out this form.
A small segment of the 180+ brands we carry require that customers contact them directly if/when problems arise. You can view the full list of those brands and get their contact info here.
Marine Depot is an authorized reseller for every product we carry. That means when you buy aquarium supplies from us, your products are not only backed by our own 60-day return policy, they also carry full factory warranties, where applicable. Some items have a 1-year warranty, others have limited lifetime warranties. Warranty coverage varies from manufacturer to manufacturer, so please read the product description of the item(s) you are considering thoroughly for details or contact us if you have warranty questions.
Learn More About Returns
Rack up reward points to earn discounts on future purchases! You can earn reward points by creating an account, writing reviews, referring friends, subscribing to our newsletter, buying products, and more!
- Most Products
Earn 5 reward points for every $1 you spend to get 5% cash back
- Marine Depot, AquaMaxx, Accel Aquatics, and Korallin
Earn 6 reward points for every $1 you spend to get 6% cash back
- Aqua Illumination, EcoTech Marine, Nano Box, Neptune Systems, NYOS, Oceanbox Designs, Pax Bellum, and Reef Glass
Earn 1 reward point for every $1 you spend to get 1% cash back
You can also get bonus reward points by purchasing select items during special sales and promotions.
Learn More About Rewards