WTT Neptune DOS, AI Nero 3, others for COR-20, lighting accessories, etc

[Ioncewaslegend]

HAVE:

Neptune DOS
AI Nero 3
Hanna Alk checker
Hanna Calcium checker + 2 bottles reagent
Hanna LR checker
Ecotech battery backups x2 (worked last time I needed them ~1 year ago, but have not tested them/how long they run my pumps in a while)
Jebao 3 head doser
MP10QD driver (driver only, no dry side) x2
MP10 extra wet side
5g blue ATO container

Looking for:
Neptune COR-20
G5/G6 XR30 diffusers
XR30 X-mounts
70.5" RMS rail
Large reactors (this size or larger: https://www.bulkreefsupply.com/aquamaxx-fluidized-gfo-and-carbon-filter-media-reactor-standard.html)

Located near Sacramento, CA