Happen to read this article CO2 – carbon dioxide at Dennerle website and they gave a rough formula on calculating CO2 bubble rate for planted tank:
Litres x 13
--------------- = number of bubbles per minute
100
Really? Anyone use this method?
Anyway - on their CO2 table, they seem to advocate 15 to 35ppm of CO2.
koah fong
Juggler's tanks
The bubbling rate are just meant to be as a guide. The actual rate will very much depend on the efficiency of your reactor/diffuser in getting the CO2 into the water.
I shoot for 35ppm CO2. It is a bit on the edge for the health of my fishes. But so far so good.
BC
Hi guys!!! For myself, i think the pH/KH method with the help of the graph is best for determining the proper level of CO2..Therefore the bubbling rate is perharps a rough guide..I tried it but my current bubbling rate was more than what i calculated with the formula. Bubbling rate is actually a bit of trial and error stuff []
Plant Physiology by Taiz and Zeiger
Guess that cal. only for their diffuser.
Everything that lives and moves will be food for you.
Just as I gave you the green plants, I now give you everything.
Genesis 9:3
there are other factors too
like your fishload, skimmers, and surface turbulence
i generally go for 5~6 bps with an external reactor, ~250l tanks, no problems so far
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