Meh ran into a pos hehe oh well.
Anyways, there is a unoccupied vanadium moon in rp2 (ez sov 1 jump from pnq), I'll make some more investigations but at a glance reacting chrom and vanadium into unrefined hyperflourite (and ofc into the normal hyperflourite after
) should yield a income per 30 days of about 460m. Depends a bit on refine and standings, did a test and bought 1 unit an refined with refining efficiency 0 and refining V it yielded 9 hyperflourite and 82 vanadium, so approximatly 14% lost, however I would expect that with refining efficiency at V it would only be taxes counting which ofc probably rounds up.
To do this one tower to mine and somewhere to react would be needed. For example it could be one medium tower at the vanadium moon. Running costs of a medium tower there should be about 100m without sov and 75m with.
Currently we can sell chromium for about 3700isk/unit which should give about 266m/30 days.
Value added from the vanadium moon would in other words be about 200m so after costs of tower is deducted about 120m or so.
With perfect refines the income should be about 520m btw.