Sorry for not very clear on my question. What I meant to ask was how long
does a bottle of Flourish Excel last? And what is the recomand dosage of
using one for 55 G tank?..
I'm currently using the DIY and looking another cheap and easy way to add
CO2 to my tank. I saw an electric CO2 generator using carbon block the other
day and thinking of trying it. It wasn't that expensive either and the guy
said a block would last somewhere between 6 month to a year depending the
setting. It sure look easy and alot less work that my current DIY generator.

My appology again.

Johnny


"Rick" wrote in message
news:flmJb.915952$6C4.455001@pd7tw1no...

"Dinky" wrote in message
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"Izuan Wahab" wrote in message
...
How long does a bottle last? What is the dosage recomanded for a 55G
tank?


A yeast bottle lasts a couple weeks. IME, a 55 gallon is too large to be
significantly affected by DIY CO2. All I was able to do was lower my PH
about .01, and no noticeable CO2 increase, according to Chuck's
calculator.


Yeah I'm not sure about a 55. I had two bottles hooked up to my 77g and it
did nothing so it's not on a pressure system. I run two bottles on my 33 g
heavily planted tank and it works well. I would try 2 bottles and see how
it
goes.

Rick