Die-hard CR user here! love the autopilot effect of it once everything is dialed in properly. I run my Alk around 7.5 due to carbon dosing. I'm able to keep that steady while dosing Kalk with my top-off as well. The more mature you system gets, where colonies are growing out, the easier it is to keep the Alk at the lower levels due to consumption.
Pity the fool who does not automate Alkalinity, Calcium, and Magnesium supplementation.
re-fill reactors???? what media do you guys run that need re-filling in a few months. i am currently running TLF reborn and in the past ran large media just like this and have NEVER had to refill media or even noticed a drop in media. My last tank was over 300g HEAVY sps with a large frag tank, i ran the reactor at 6.3-6.4 and never touched it for 2 years until i broke the tank down.
re-fill reactors???? what media do you guys run that need re-filling in a few months. i am currently running TLF reborn and in the past ran large media just like this and have NEVER had to refill media or even noticed a drop in media. My last tank was over 300g HEAVY sps with a large frag tank, i ran the reactor at 6.3-6.4 and never touched it for 2 years until i broke the tank down.
I'm using a MRC CR-2. It has the second cylinder to help raise effluent pH. While it may not last long, I'm still using Gen-X media and I search hard for it. I feel that my media disappears much slower than it should. As others have said countless times, GET A QUALITY REGULATOR. My fellow reefing friends and I have combined to have run about 6 different regulators or something silly like that. Unfortunately, all have seemingly had issues-- all the way up to the digitally controlled bubble counters, etc. My latest is a Reef Fanatic regulator and has been good all year. Santa even brought it a gift. A rag to clean her gauges Har Har.
It is true that there are more steps along the process (CRs vs. Dosers). My recent issue was my MaxiJet feed pump losing its pressure on its own and my effluent coming to a stop! I read from reactor setup instructions to not T off of my return pump, but now I'm thinking about it.
Oh, despite my second cylinder AND nightly kalk top off, my pH can get really low. Lowest and second lowest reading this month was 7.49 on Christmas and a dip 7.58 on the 18th.
You're on the right track! I learned not too long ago to once every six months to disconnect my maxijet feed pump and simply blow in to the feed line of the reactor. Works like magic and keeps your reactor flowing nicely. The maxijet is not a pressure rated pump so overtime that line can become blocked.. Mine drove me crazy with that after a while, when i learned how to fix the issue, I had to laugh at my self due to the fix being so simple, but assuming that it was complex as so many other things in this hobby. LOL. As for your PH, try to get you skimmer air tube routed outside the house or setup a simple C02 scrubber, where you suck your skimmer air through a container filled with soda lime.. Here is a link with the concept... You can set one up very easily and its cheap!
http://glassbox-design.com/2009/soda-lime-co2-scrubbers-mcu-research/