I did it! I properly cycled a fishless 20 gallon tank with live plants and full spectrum light using a decaying shrimp as a starter. Everything is exactly where it should be. Problem now what to do with it?
I have livebearers in my other 30 gal. I've finally gotten those readings where they need to be except for the pH. The water is still too soft and acidic. I've added seashells to slowly raise the pH.
The pH in my fishless tank is perfect for live-bearers, but I know rapid changes in alkalinity and pH can kill them.
Can I gradually mix water from the fishless tank into the other during water changes to increase the pH? My brain can not calculate how much water to add.
Options currently available for moving (eventually) into new tank are a pair each of mollies, platties and fan-tail guppies.
I'd like to get both tanks to match so I can possible move fry from one tank to the other.