I remember why the upflow mods failed for me - it was too hard on the pumps as it must have been just a little too restrictive on the intake side. They would get super hot, one got so hot the casing of the pump melted (warped and started leaking water all over).
I guess definitely something you want the reactor to be designed for rather than arbitrarily switching the input/output lines on the pump.
Quote:
Originally Posted by Delphinus
You know, I tried that too on a couple different units I had. I can't remember what the issue was but it wasn't a complete slam dunk either. Upflow does make more sense, for one you can do away with the CO2 recirc line. I wonder if it was I was losing too much CO2 into the tank and I was noticing a depressed pH. Might have been something else. I can't actually remember now.  |