My bad, totally forgot to include tank parameters.
Tank size: 16 gallon
pH: 8.4
ammonia: unknown
nitrite: 0
nitrate: 20 ppm
kH: 300
gH: 75
tank temp: 80F
The tank is around a month and a half old, have had the swords since day 3. They've basically been in this shape since then, no better no...