The Oceamo DUO system

Oceamo DUO is a system for the simple and effective supply of seawater aquaria with calcium and alkalinity (KH), the most important building blocks for the growth of hard corals in reef aquaria.

Additional to Ca and KH, DUO also provides the important elements potassium, strontium, boron, magnesium, bromide, sulphate and the trace elements rubidium, iodine, selenium and fluoride to create an optimum aquarium environment for healthy growth.

DUO is very easy to use: it consists of only two components, which are usually dosed in the same amount. DUO does not need to be diluted or dissolved before use.

The composition of DUO prevents ionic shift (at 1:1 dosage). The pH value is raised by DUO, which accelerates the growth of hard corals.

The pH value is raised by DUO, which accelerates the growth of hard corals. By the use of DUO the use of CO2 scrubber to stabilize the PH can often become obsolete. This leads to lower operating costs.

In addition to the “main parameters” of calcium and alkalinity, DUO doses many other substances: strontium, boron, iodine, fluoride, bromide, sulfate, potassium, rubidium,selenium and magnesium. As a result, these important water parameters are adjusted to the coral’s consumption.

DUO dispenses with an organic content: this allows the product to be diluted as required, and the dosing of DUO does not deprive the aquarium water of any oxygen.

In our laboratory, all raw materials and products undergo a strict quality control (using ICP-MS and other methods). This enables us to guarantee the consistently high quality of our products.

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Oceamo DUO is very efficient: 10 ml increases the alkalinity in 100 liters tank water by 1° dKH. In an averagely populated aquarium, approximately 10 ml DUO is needed per day per 100 l.

An 80-liter nano tank can be operated with 1 liter DUO for an average of 125 days.

DUO is available in 1 l containers and 5 l canisters. For tanks over 500 l, we recommend the use of 5 l canisters. Our containers are spill-proof, and the 1000 ml containers are also equipped with a child safety lock.

DUO can be dosed manually or by a dosing pump. DUO KH and DUO Ca should be added with time delay (at least 10 minutes) at a high-flow point (e.g. the sump). It is best to divide the dosage into several individual portions to keep KH and Ca as even as possible.

For very small aquariums, it makes sense to dilute DUO before use in order to achieve a higher dosing accuracy.

DUO can easily be diluted with osmosis water in any ratio, the shelf life is not limited.

We recommend to measure the alkalinity and calcium values every 2-3 days in the initial phase (after switching to DUO) and adjust the dosage accordingly. Do you need help finding the right dosage? Please contact us, we are happy to help!

Once established, alkalinity and calcium should be measured once a week.

Each tank is different, which is why no product can permanently nail all water values to the set point. We have designed DUO to guarantee a basic supply, and so a critical lack of these items is highly unlikely. Nevertheless, the dosage is in an area where no unnatural enrichment is expected. It is recommended to run a water analysis in our laboratory every 3-6 months in order to be able to adjust the water parameters to the optimal value if necessary.

DUO is designed in a way that all essential components of the seawater are added so no ionic shift should happen.

Due to the dosage of DUO, additional sea salt is produced, which increases the salinity. This should be taken into account for water changes.

When dosing 1 liter of DUO, ~ 8.7 liters of seawater should be replaced with osmosis water to keep salinity constant.

Example 1) In a 1000 liter tank, 100 ml DUO are dosed daily. In order to keep salinity constant, once a week 6 liters of water should be replaced by osmosis water

Example 2) In a 100 liter tank, 10 ml DUO are dosed daily. To keep the salinity constant, 0.6 l of water should be replaced once a week with osmosis water.

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We recommend supplementing the primary care by DUO with inorganic trace elements and organic nutrients (amino acids, carbohydrates). This supply is ensured by Oceamo Regulator A & O.