Stop adding things to your cold rinse.
And wash the dipes on warm/hot with no detergent to get rid of the stuff you've been adding.
Ammonia smells on healthy baby's dipes typically mean you have detergent buildup. Since Charlie's rinses clean, I'd guess it's the stuff you're adding. It's unnecessary.
Stick with just the Charlie's and if you want, run an extra rinse (cold) after the wash cycle.
ETA: Some folks have said hemp is sooooo absorbant, it tends to need the extra rinse so you might want to start incorporating an extra rinse each time you wash the hemp inserts. We use just the microterry and don't have any issues with smell.
HTH!
ETA: Contact Charlie's and ask them if you need to add anything because of water issues. Can't help you there, but I'm sure they can!

And wash the dipes on warm/hot with no detergent to get rid of the stuff you've been adding.
Ammonia smells on healthy baby's dipes typically mean you have detergent buildup. Since Charlie's rinses clean, I'd guess it's the stuff you're adding. It's unnecessary.

Stick with just the Charlie's and if you want, run an extra rinse (cold) after the wash cycle.
ETA: Some folks have said hemp is sooooo absorbant, it tends to need the extra rinse so you might want to start incorporating an extra rinse each time you wash the hemp inserts. We use just the microterry and don't have any issues with smell.
HTH!
ETA: Contact Charlie's and ask them if you need to add anything because of water issues. Can't help you there, but I'm sure they can!