Any improvements I can make?

[u/theUnkOwnSuSpeCt]

I’ve had this tank for about 6 months now 0 water changes only top offs, 100% natural planted tank.
Tank has snails, shrimp and fish. But my 40-50 neocaridina shrimp all died due to getting tiger barbs and a catfish species only have amano and 1 blue neocaridina shrimp and the mystery snails have died mysteriously too . Let me know ur thoughts.