Re: Cost of 40B vs. Cost of 20L
As many said before me, the cost of 40B over 20L would be marginal at best. Personally, every time I try to save $10 I lose $100.
Can you build and run a gorgeous tank without co2? Absolutely.
Will you be able to grow all the pants you might want to without co2? No.
Can you grow half-decent HC without co2? Crypts? Absolutely. Big deal ...
But let's see some pictures of Rotala roundifolia that shows any color but green. Or R. macrandra. co2 is a tool for specific jobs. Don't knock it or other members until you've tried it.
I have tried it, and can live without it's hassle and expense. Others, might find it a necessity for what they want to do, that's entirely up to each individual hobbyist. Yours are very valid points. Co2 is most definitely a specified tool.
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