Vodka dosing "carbon dosing" fuels bacterial growth which is not limited to cyanobacteria. Vodka dosing is risky done correctly. Done incorrectly it can be a nightmare.
Also unless you remove the source of nitrates/phosphates then you will always be dosing vodka. Long term its not a solution.
Nitrates can be caused by a few factors all stemming from food and fish. So either maintenance is lacking, tank is overfed and/or overstocked.
29g Mixed Reef, 150w 14k Phoenix MH w/ Moonlights, Reef Octopus BH1000 HOB Skimmer, Ecotech Vortech MP10es, ReefKeeper Lite (Plus), PH Probe, Temp Probe, ATO, Carbon/GFO Reactor.