Is the water clear, odorless, and are its basic parameters normal?
Autumn and winter are an extremely difficult times for a water reservoir because the levels of nutrients rises from surface waters, fallen leaves, and other sources. Additionally, inflows of soft water during these periods leads to a decrease in the carbonate hardness (CH) of the water, and thus to a change in its most important parameters. From such a situation it is easy to get to typical spring problems, primarily algae invasions/blooms. The self-cleaning mechanisms of ecological processes only work properly in sufficiently hard and buffered pond water. The proper parameter are: pH – from 7.4 to 8.4, carbonate hardness (CH) – above 5.5°, phosphate content – below 0.030 mg/l, and nitrite content – less than 0.3 mg/l. Fluctuations in the pH value are particularly inadvisable, as they contribute to a sharp decline in species diversity in the pond, and to the reduction of the greatest enemy of algae – zooplankton. In such a situation, a massive growth of algae is inevitable. It is best to test the most important water parameters after winter and use the appropriate ecological products to rebalance critical deviations from the norm. In order to obtain reliable results, it is recommended to test twice: once in the morning, and then 12 hours later in the evening. For this purpose, you can use an easy-to-use basic testing kit (drop test), or deliver a water sample to our company. If the nitrite content exceeds: 0.3 mg/l, then 30% of the pond water must be replaced with fresh water (preferably tap water), and if in excess of 0.7 mg/l, replace more than 60% of the water, and if in excess of 1.0 mg/l a complete water change is recommended. In any case, the newly added water must be treated with PondStarter to create a compatible pond water biotope. As a result of this treatment, harmful substances (such as chlorine and heavy metals) will be bound and neutralized. Next, it is worth stabilizing the most important water parameters with PondStabil; this product will adjust the pH value and increase the carbonate hardness (CH) to create the ideal conditions for plants and all the inhabitants of the pond. Finally, it is a good idea to use a natural algae suppressant like AlgoStopper, and to apply the EcoGerm Ponds microbial mixture, which contains a high concentration of beneficial bacteria to help maintain the biological balance in the pond. If the phosphate level is too high, you can apply the PhosSorb mixture that is safe for microorganisms. PhosBinder, can also be used in places where water flows, (in filters, at pump outlets, in streams, or at the bottom of waterfalls), as a mineral adsorbent of phosphorus compounds and heavy metals. These products will reduce unwanted compounds in the water over the long term. However, while the use of the products mentioned above is not necessary when the most important water parameters are normal, after most winters these water parameters will need to be adjusted in large reservoirs.
Activating organisms in ponds
Is the average water temperature in the pond above 8° C? If so, you can help to activate organisms in the water. Under natural conditions, it takes 6-8 weeks to restore the bacterial flora that play an important role in the process of water self-purification after winter. The use of bacterial mixtures shortens this process to one week. One of these products is EcoGerm Starter, which contains very high concentrations of specially selected bacterial strains that break down organic residues and support the self-cleaning processes of water. Thanks to these bacteria you can recreate the biological conditions in ponds in natural way. EcoGerm Starter is especially recommended for reservoirs with a filter system, a UVC lamp, and a filter pump – if the water has reached a temperature of at least 8° C, the filter can be started by applying a bacterial starter to it. In ponds that do not have a filtration system, the EcoGerm Ponds mixture is perfect; it contains selected microorganisms with various modes of action and enhanced with barley straw extract. Thanks to these various modes of action, EcoGerm Ponds naturally and microbiologically cleans and cares for the pond, increasing its biological potential to decompose organic water pollutants. It is important to remember that UVC lamp should be turned off during the application of microbiological preparations, and should only be turned on again after at least 48 hours have passed.