Abstract
The article presents the results of testing of solid wastes generated during liquid humic preparations production as biologically active additives in fish ponds. The tests were carried out in 2019 season in the nursery ponds of the SPU “Isobelino” and in the feeding ponds of the KhRU “Vileika” control of pond water in reservoirs showed that the introduction of humate-containing additives into fish ponds does not violate the hydrochemical regime of their functioning, all indicators are within the normative limits. As a result of the study of the aquatic biota, more efficient development of phyto- and zooplankton was revealed, as well as an increase in fish productivity, both in feeding and nursery ponds compared to the control ones. A production check carried out at OJSC "Beloye" Experimental fish farm" of Gomel region in 2020 showed that the use of humate-containing wastes of humic production makes it possible to achieve higher fish productivity in comparison to the traditional scheme of intensification measures, with 50 % savings of applied
 organic fertilizers, 25 % savings in ammophos and 100 % savings in ammonium nitrate. The increase in fish productivity is 6‒7 %.
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