Hey guys i was wondering how high dkh u r able to get youre effluent out from youre calcium reactor. Ive been having a hard time dialing mine in. Im beggining to think maybe my media is no good no more. I just tested my effluent and its in the 8.5 s and my display is around nine so im not being able to melt good my media. Ibhad been running around 250 mmpm and 6.7 ph . But effluent was even lower i also calibrated my ph probe but now im gonna try lower effluent n much n lower ph in crx around 6.4 i am using arm coarse media. I am going to over hawl this set up and buy everything new media ph probe even co2