[slief]

Originally Posted by DamonG

Hi slief.. Thanks for responding, I value your input!

I have a geo 618. I am using actually a combination of reborn and ARM coarse in the reactor(4lb reborn and 8lb ARM). I have done neomag also(approx 1.2lb) to add magnesium in..

I contacted geo about a secondary reactor chamber, but because of my space constraints, I only have maybe 4" in diameter that I could utilize, and they advised me that had nothing that small. But I would love a secondary tube..

**** actually an idea just came to mind to add one, or maybe fabricate one,a small one out of possibly a clear 2" chamber for a ro unit****

Are there any tips or links our tricks you could give to us novices?

Thanks again..

I am using a smaller MRC 4" diameter 2nd reactor that I had laying around. It's similar to this one.
http://www.myreefcreations.com/produ...Series/x5.html

Avast also has some inexpensive reactors that would work but their footprint may be too large for you.
http://www.avastmarine.com/collectio...-media-reactor


I have it setup above the first reactor on a shelf with the first reactor flowing through the bottom of the 2nd reactor. My setup beyond that is rather complex as I am using a Cole Parmer medical grade peristaltic pump as a feed pump and I use an Aquarium Plants Carbon Doser regulator for my Co2 feed. The Masterflex pump allows me complete control over the flow through the reactor down to 1/10th of a ml/min. I run it at 25ml/min a Co2 rate of about 1 bubble every 4 seconds which gives me a reactor pH of 6.7. I have an Apex that controls the Co2 regulator but it never has to intervene as my reactor pH is always consistent due to consistent flow through the reactor and consistent Co2 rate.

This is my setup.



This thread discusses the Masterflex pumps. These make calcium reactors a set it and forget device and eliminate some of the inherent issues with calcium reactors such as effluent line clogging and maintain incredibly stable reactor pH. That said, these Masterflex pumps are cheap. Especially the better ones like what I use. Most people on the other hand just use a feed pump like a Maxijet or feed from their manifold and then use a needle valve to control the flow via the effluent line. The downside to that method is that it generally will result in clogged effluent lines and inconsistent reactor pH.

Masterflex thread:
http://www.reefcentral.com/forums/sh....php?t=2368618