Do you recommend some special aditive to start flu...

Hey there @ReinDeer to put it simply you don't need anything special to flush your plant really just time and water that is PHed correctly. Flushing additives help break down the salt deposits so they flush easier and quicker. Some flushing additives such as Cannazym also break down dead plant material in the growing media. Long story short: you don't need anything special just PHed water and a week or two(two if you have a nutrient burn or lockout). Hope this helps friend! 😎