Silvia RADU1, Nicoleta Georgeta DOBROTĂ1, Mioara COSTACHE1, Nino MARICA1, Gheorghe DOBROTĂ1, Mădălina Georgiana DELIU1, Mariana Cristina ARCADE1, Marinela GANCEA1, Constantin Alin BARBU1, Georgeta ENE1, Sorin Marian DRĂGUȚ1
1Research and Development Station for Fisheries Nucet, loc. Nucet, street Principală, no. 549, Dâmbovita county, Romania
email: viostef06@yahoo.com
Keywords: algae, ecological, cyanobacteria, control, blooming
Abstract
Cyanobacterial blooms are a major problem for aquatic ecosystems and fish farming activities, affecting water quality and the health of organisms. This paper compares the effectiveness of three control methods applied in experimental fish ponds: chemical treatment with copper sulphate, treatment with hydrogen peroxide, and an ecological method based on the use of barley straw. Over a period of eight weeks (June-August 2025), the physical and chemical indicators of the water, the concentration of chlorophyll a, and the density of cyanobacteria were analysed in four ponds with a history of algal blooms, namely cyanobacteria. The results show that hydrogen peroxide (5 mg/l) significantly reduced cyanobacterial biomass (p<0.05) without major negative effects on other parameters, while copper sulphate had a rapid but temporary effect. Barley straw showed moderate effectiveness, with slow but favorable effects on maintaining ecological balance.
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Received: 10 Oct. 2025, Revised: 10 Nov. 2025, Accepted: 10 Nov. 2025, Published: 16 December 2025
Citation
RADU, S., DOBROTĂ, N. G., COSTACHE, M., MARICA, N., DOBROTĂ, G., DELIU, M. G., Arcade, M. C., GANCEA, M., BARBU, C. A., ENE, G., & DRĂGUȚ, S. M. (2025). RESEARCH ON OPTIMISING METHODS FOR COMBATING CYANOBACTERIA IN FISH PONDS. Pescuitul Și Acvacultura ( Fishing and Aqvaculture), 2(4), 55–63. https://doi.org/10.5281/zenodo.18031639
