Well that is kind of the question, though perhaps wrongly phrased. How does the flow and distribution of co2 go through the tank with the 2 filters?It doesn't matter as long as you are injecting enough CO2 into the water and there is enough flow throughout the tank to distribute the CO2 everywhere. I don't understand your concern about distributing the CO2 into the other filter (?)
As there will be an outlet on both the front and the back of the tank. All I am thinking of is if the co2 will get distributed evenly. The flow of the front outlet will, of course, lose some of its power by the time it reaches the outlet on the back. Does that mean that the 2nd filter picks up the flow of the first or will it create a "build up" zone of 2 competing flows where the co2 will get stuck?
Alternatively, am I just making this more difficult than it actually is? Am I placing the inlet and outlet on right places? This might seem rudimentary to some of the better, more experienced, scapers but it will be my first time working like this and I really just want to get it right.
Beautiful tank! What are you using for outlets? You can't even see them!I Have a 55 gallon and a 75 gallon in my office, I run two filters on each one. I have them setup just the way you described. I really like the setup as I get good surface agitation and a lot of filtration with two filters. I use an Eheim pro 4 250 on most all my tanks. The 55 Gallon has one reactor and one CO2 setup I get a 1.0 PH drop and everything is growing well so I assume I have good distribution of CO2 for my purposes. The 75 Gallon has two reactors and two CO2 setups, this is really overkill for the size of tank the only reason I did it was because I had the equipment, and I don't have to change the CO2 tanks out as often. A 120P is a great tank good luck with your build.
The first picture is the 55-gallon (this tank is only about 3 months old, however I have used this same setup on many tanks) second picture is the 75-gallon setup.
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I am unfortunately fairly limited on the filter choices. Eheim and Fluval are sparsely available and come with ridiculous price tags because of it. ADA and Oase are nowhere to be found, so the "premium" filter of choice here is Atman. It certainly is not a bad filter but it does lack some of the features such as pre-filters. The 3337s line that'll use does 1,500 lph so a combined 3,000 lph. Which would be a perfect 10 times turnover and 25 liters of "bucket volume".
Do you think your 75g would be running as well as it is now with just 1 co2 system? Have you ever had any problems with flow or build up areas?