So, I read Randy's article from 2003 on Chlorine / Choramine (Chloramine and the Reef Aquarium by Randy Holmes-Farley - Reefkeeping.com) and it made me paranoid about my RO/DI water. I know Houston uses Chloramine in the water, so I initially purchased BRS's 6 stage Chloramine RODI unit a long time ago. Since then, I've read from Spectrapure and others that no special carbon is necessary to remove Chloramines, and I recently switched from BRS's cartridges to Spectrapure's. This is what I'm currently running (with two BRS 75gpd membranes that are about 18 months old):
0.5 Micron Carbon Block Filter 10-inch CF-0.5-10
1 Micron ChlorPlus Chloramine Removal Carbon Block Filter 10-inch
0.2 Micron (Absolute) ZetaZorbâ„¢ Sediment Filter Cartridge 10-inch
SilicaBuster DI Cartridge - Color-Indicating SuperDIâ„¢ 10-inch
MaxCap DI Cartridge - SuperDIâ„¢ 10-inch
I swapped to this in July, and I make about 140 gallons of RODI a month, so I've maybe gone through 560 gallons. My TDS into the DI stage is 9-10ppm, and my TDS out of the DI is 0ppm.
Now, here's the interesting point. I recently bought a Hanna Total Chlorine ULR Checker, and it is reading my total chlorine at .05 ppm. Per the article, that could be killing copepods, if I read that correctly. I have noticed that this tank has never had a lot of copepods (it was started in November/December of last year), and maybe that's the reason.
Any ideas? Suggestions?
0.5 Micron Carbon Block Filter 10-inch CF-0.5-10
1 Micron ChlorPlus Chloramine Removal Carbon Block Filter 10-inch
0.2 Micron (Absolute) ZetaZorbâ„¢ Sediment Filter Cartridge 10-inch
SilicaBuster DI Cartridge - Color-Indicating SuperDIâ„¢ 10-inch
MaxCap DI Cartridge - SuperDIâ„¢ 10-inch
I swapped to this in July, and I make about 140 gallons of RODI a month, so I've maybe gone through 560 gallons. My TDS into the DI stage is 9-10ppm, and my TDS out of the DI is 0ppm.
Now, here's the interesting point. I recently bought a Hanna Total Chlorine ULR Checker, and it is reading my total chlorine at .05 ppm. Per the article, that could be killing copepods, if I read that correctly. I have noticed that this tank has never had a lot of copepods (it was started in November/December of last year), and maybe that's the reason.
Any ideas? Suggestions?