Thanks. I am dosing sodium nitrate and sodium phosphate. I finally gave in and added chemiclean yesterday. I know it's temporary but I'm tired of looking at the cyano all over everything. At this point I'm just working on keeping N and P at detectable levels tho I have no idea why they are being depleted. No chaeto and skimmer is running with the cup removed so really my only export is filter socksIf your levels of n and p are nearly undetectable it will work against the beneficial bacteria, for it to work you would need to have po4 and no3 elevated at all times (this is due to heterotrophic bacteria not being able to divide and grow if nitrates or phosphates are depleted) also if you using neonitro for nitrates it will have contradicted elements.
Try and use known sources of nitrates like calcium and sodium nitrate instead if possible.