EDC-TryhardHello, we offer tritium replacement at $10.00 per marker and it requires the replacement of all the markers at the same time. The service also requires a minor or major overhaul since the watch must be disassembled. The specifics can be found here: https://www.armourlite.com/assets/images/repairs/AWC_Repair_Form.pdf
We get asked quite often if someone can upgrade from T25 to T100 markers. Unfortunately, this is not possible since the dial and hands of a T25 watch are only able to fit T25 tubes. T100 watches have dials and hands that allow for the larger T100 tubes.