I think to biggest problem is that most aquarist are looking for a quick solution. And cyanobacteria is an opportunist and do well when something changes in the tank(nutrients, light schedule etc). So IMO the best way to control cyano is to do everything slow, and if you change something, give it some time efterwards to get back to stable conditions.
In the tanks I run at work I also see that cyano will start to come when nitrate gets under 1ppm. And since i'm a bit lazy and don't want to clean the sand that often I want to give the aquarium the chance to manage the cyano by itself. I only adjust the nitrate(and phosphate is that is needed) by adding KNO3 or lowering the carbon source. The additives are dosed by dosing pumps so it can be done slow and during a couple of weeks time. No other changes is done and usually the cyano will go away in 1-3 weeks. Again, this is for tanks with low nutrients. And it might be easier with tanks that have been running for a while.
For tanks with more nutrients it's harder to find the right balance. I'm sure you can run a tank with higher nutrients without cyano, we have several of those as well. I think the issue here is also the stability of everything. IMO it's not a question about high or medium nutrients in this case. Maybe more the relation between N and P and if the nutrient levels are being the same over time or not.
I can add that I don't like to add anything in our tanks that I don't know the content of And therefor I prefer not to use Chemi clean or similar products.
/ David
In the tanks I run at work I also see that cyano will start to come when nitrate gets under 1ppm. And since i'm a bit lazy and don't want to clean the sand that often I want to give the aquarium the chance to manage the cyano by itself. I only adjust the nitrate(and phosphate is that is needed) by adding KNO3 or lowering the carbon source. The additives are dosed by dosing pumps so it can be done slow and during a couple of weeks time. No other changes is done and usually the cyano will go away in 1-3 weeks. Again, this is for tanks with low nutrients. And it might be easier with tanks that have been running for a while.
For tanks with more nutrients it's harder to find the right balance. I'm sure you can run a tank with higher nutrients without cyano, we have several of those as well. I think the issue here is also the stability of everything. IMO it's not a question about high or medium nutrients in this case. Maybe more the relation between N and P and if the nutrient levels are being the same over time or not.
I can add that I don't like to add anything in our tanks that I don't know the content of And therefor I prefer not to use Chemi clean or similar products.
/ David