Solar Eclipse Lens Stacking

Hi,

I have a an FZ1000.2 on which I keep my circular polarizer and a UV lens. I just got a Celestial Optical Helios ND 1000000 (6.0) 20 Stop Solar Photography filter for next month's Solar Eclipse. Primary question is to simply stack it on the other two or remove one of them (which) or both and use it solo for the event?

PS: As this will be my first time shooting the sun and using this filter, any specific settings for this camera would be greatly appreciated. Plan to shot sun spot pics as practice.

Thanks.

Those are filters, not lenses. I'd use only the solar filter. That's for all stages other than totality. If you get to see totality, don't use a filter at all for that.

As Sybersitizen says, use a solar filter. Do more research especially with regards to safety. You do not want to damage your eyesight which can be easily done if not careful.

If you only photograph the eclipsed sun, you'll get images identical to thousands of others. If you have time, remove the filter and also photograph people watching the eclipse, with a bit of luck and photographic acumen you can get unique images.