[Daddi0]

I would say your are safe to increase your dose. Personally I would only increase it a ml a day (instead of a large dosage change) this will allow the bacteria to grow at a more controlled rate instead of an explosion, and keep a sharp eye on your reef and parameters. If you see issues, cut the dosing by 1ml a day (then you wont have a huge bacterial die off) Other than a bloom being unsightly, it wont hurt the reef unless it depletes all of the oxygen. I test my PH twice a day figuring if my oxygen is being depleted by bacteria, I would see a rapid drop in PH. I havent seen this but I do have great flow and a lot of surface water movement.
When I got a lot of snot in my reef, I just backed my dose down a bit and it slowly went away.
On a side note, my sand was covered in cyano prior to vinegar/kalk, and now none. No GHA either.
Cheers! Mark