Is the tank mature?
Tonina is not a strong rooted plant, I actually love it that way, you don't gut your substrate by trimming and moving things around like some other plants do.
It does not like shade.
It does likes a good swift current, with lots of C02.
If you swap over to just Tonina, keep in mind they are slower growing than the plants you may be used to, so the system will need to be ran in a more managed manner, I like to keep some faster growing plants in my Tonina tanks, it helps keep things stable and moving along nicely.
If you want to grow Tonina nicely, I would suggest not worrying about ph at all, go as low on everything as you can and it will do fine, if you have fish you are concerned about, toss them in another tank.
Learn to grow Tonina first then add fish/shrimp later if need be.
Tonina is not a strong rooted plant, I actually love it that way, you don't gut your substrate by trimming and moving things around like some other plants do.
It does not like shade.
It does likes a good swift current, with lots of C02.
If you swap over to just Tonina, keep in mind they are slower growing than the plants you may be used to, so the system will need to be ran in a more managed manner, I like to keep some faster growing plants in my Tonina tanks, it helps keep things stable and moving along nicely.
If you want to grow Tonina nicely, I would suggest not worrying about ph at all, go as low on everything as you can and it will do fine, if you have fish you are concerned about, toss them in another tank.
Learn to grow Tonina first then add fish/shrimp later if need be.