Ceg4048 and I are having some PM discussions on larger tanks (> 120 us gals) and the much larger amounts of c02, EI, flow/current, etc that seems to be needed for our tanks to get optimal growth and no algae as compared to smaller volumes of water.
As an example, I need to dose about 3-4 times the 'normal' recommended EI dosing for a 180 gal tank. My drop checkers are also both yellow, but fish are okay (no gasping, surface activity, etc) and I am still increasing a bit at a time, with better plant growth with each increase.
So, I may be exceeding the RECOMMENDED 30-40 ppm c02 range as well..........
I also have > 2000 gph in water pumps ALONE (outside of the main filter/pump) to help with flow and current.
I would be interested in replies from those with tanks of this size OR LARGER that use pressurized c02 AND EI dosing with the following info, so I can summarize and see if we can glean any tips or general patterns that would help all when dealing with larger tanks.
Pattern recognition is a big part of my career, so am hoping to see something(s) that will help us all.
1. Tank size.
2. Method of c02 injection. External reactor, Mazzei, needle wheel, etc. Bubble rate if possible.
3. Type and duration of lighting. MH, T5, T12, etc. Wpg please.
4. EI dosing numbers and schedule. Daily, 3x a week, etc.
5. Type and size of filter(s). Canisters, hang on, etc.
6. Type and size of any extra water pumps or powerheads for additional flow/current.
7. Overflow boxes or not, as this affects c02 de-gassing.
8. Sump or not, as this affects c02 de-gassing.
I will publish any results that I can come up with.
At the very least, a table of tank sizes and ranges of EI and c02..
Feel free to PM (private message) me with any questions or replies.
Thanks in advance.