Is there a dosing system you’d recommend that won’t break my wallet in half? I’m looking at some options and they are all close to $500 or more
A dosing system does not need to be automatic, or expensive. Manual once a day dosing is fine for most tanks using something like All For Reef, and many tanks with a low demand can use that or other produces even less frequently.
Overall, any tank that actually needs once a day dosing (that is, daily alk demand more than about 0.4 dKH) cannot be satisfied by water changes unless you change large amounts daily using a mix with alk much higher than the tank.
I dose All for Reef using a
BRS 1.1 mL per minute doser ($72) on a cheap electronic timer.