In my 58 gal I dosed a capful a day with great results.Depends on what your budget is but I found it doable.also the size of the tank as for larger tanks cost could be prohibitive to dose excel.
bh:Will flourish excel do as my primary carbon source instead of running CO2 injections?
It does act as a replacement but there is a limit as to how economical it will be.
bh:
Yes: but do you really need additional CO2 (You have approximately 2ppm naturally)?
TR
Thats no a bizzare exception at all .For years I ran my 58 gal with 300 watts of light,fert tabs in the substrate,daily full doses of excel and daily full doses of the entire seachem line with great growth and no algae problems.I grew tired of so much work in the trimming and replanting so backed everything off to what I have now.I realize we talked about this a year ago or more, but I think it's important to say for people that don't know:
I think your high light, fertilizer dosed tanks without added co2 are some bizarre exception, not the rule.