Ok, here's where some more confusion reigns. I was taught that you check rejection rate, keep it above 96-97% and all is functioning properly. I was also taught about membrane creep, always flush first, then collect and dump if needed, then collect. Then I see a post elsewhere from an RO/DI system supplier that says membrane creep is nothing to worry about and now someone is suggesting that we replace RO membranes by age not rejection rate. Is there any real consensus? Not ranting, seriously curious as to where the "hobby" stands these days. I have a 3 position TDS meter on the system just for this purpose of membrane performance checks. There are also some who advocate letting the water "breathe", "offgas" for at least 24 hours before using. I've never done this mostly due to time constraints, just always making water at last minute.
Hey there Adam, is this a common practice for you? Do you flush yours every time you make water? I've had an ongoing diatom issue along with cyano that just makes my tank look awful. Doesn't seem to bother the fish or coral mostly cosmetic. I just purchased a silicate test kit and an additional stage that I plan to put a carbon block. Recently I changed the ro membrane that looked spent. I really didn't think it was diatoms since my tank is about 1 1/2 years old. I looked at a sample under microscope and it was diatoms I had thought it was a bacteria bloom or something. I never run my rodi past 0 tds. My nutrients run about 5 nitrate and 0-0.03 PO4 on hannah. I've been working on having nutrients as my tank was struggling being too clean
Yes extremely, I would say sterile. I never registered no3 or po4 above 0. All my sps were pale and not growing. I would experience alot of stn and all my coraline turned white and wouldn't grow. As soon as I added potassium no3 all my corals reacted overnight and within a week had color. I was no3 limited and my tank drank it up as fast as I could add it.
Hello Adam, Sorry for the lack of updates, work has been nuts. All healthy acros are showing better, more consistent PE. Tissues look fatter and healthier. Struggling frags are still struggling but not getting worse. Overall I'm happy with the change but I cannot rid the tank of cyano at this time. I have been very limited on time so just bearing with it till things get a little easier then I'll attack it in earnest. I have yet to add any new acros since the change so I don't know of a healthy new intro would continue being healthy. I'll get back to buying corals soon and we'll see.
