Cannot get rid of cyano!

[Proteus]

I know you say wc are not realistic for you. And I would understand if fowlr. But it may help just to do a monthly change.
I know you dose the essential and everything looks great but even once a month will only take a hour of your time.

I dose cal alk mag. And prodibio. I did try the route of no wc. But wasn't happy with growth rates in my tank.
I do a biweekly change of 50 gallons which I do while cleaning tank. I believe it does wonders as my cheato nor mangroves will grow. I started with a base ball size chunk and 6 months later it's the same size.
Wc never did help with my cyano problems but after using cemiclean I switched to RODI and cut feedings down to half. My tank hasn't seen cyano since and the wc seem to keep my tank cleaner

[Cal_stir]

I think that if you don't have a nutrient problem the main reason for wc is to replenish trace elements, however, they can be dosed.
I am pro wc but that doesn't mean it's necessary.