update.
Plants are growing slowly. There's no algae issues so I guess things are going fine. I'm adding dry ferts too but I'm not measuring, a pinch here, a pinch there. There's plenty of CO2. The crypt is melting and growing new leaves.
oh, and added the fish that was in my 29G
7 r. espei
1 rummy nose
1 cherry barb
2 b. histrionica (digger)
1 rubber lip pleco (digger)
1 flying fox
The diggers are problematic in a mineralize soil tank for sure. However, they've only dug in their caves so the damage is minimal.
And I really dislike the flying fox but I'll have to live with it.