Hi Rev,

The stabilizer (CYA) bottle should have some guidelines on it but I would say that adding a 4 lb bottle should give you a max rise of 20 ppm (I would guess it would be a little less) so that's probably a good amount to start. You could buy extra while you're at it to adjust later as necessary.

Also, I have seen in other threads that some conversions need polyquat to get the water crystal clear. Since you mention a green tinge but otherwise are under control, you could try this but I don't have the firsthand knowledge to be able to say it will help for sure, I'm just going by what has worked for others.

Congrats on your conversion.

Peter