HMA filter for auto drip system which one to buy???

[jim barry]

Anyone recomend any particular make of HMA filter for an auto drip on a 400 uk gallon tank. And how do you know when it is time to change the cartridges?
I am looking at either the R.O Man or Devotedly Discus units and i am getting confused about which one to buy.

 

[swedeboy78]

I got mine from Devotedly Discus and will change the cartridges every 6 months. I drip at 3-4 GPH.
Also, do yourself a favor and get a flow meter when you hook it up - best $8 I ever spent!