I have a medical doser I got from natureef... You can have for some frags
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I also use a beast... I like the PM reactors... When first got it I hated it... I strill had to dose a lot and my ph went from normal 8.5 to 7.8 and it wasn't even adding cal. or Alk. But now that I have got it tuned in I think I love it.... I turned up the Co2 to about 65 to 70 bubbles per minute.. The effluent drip up to about 80 to 90 drips per minute... Using the regular crushed coral that was given to me with the reactor which I think takes a lower PH to break down...
The ph is also stable @ 8.05 now which is not having a negative effect on my Sps..
I dose about a quart every week just to keep Calcium, Alkalinity a little high...
Calcium is now at 480 and my Alkalinity is at 4.00 Magnesium is also a little high...
But I haven't dosed any epsom salts in a while, like a month...
This think was made for a 500+ gallon system... Mine is a 275 gallon system...