I started out with 2 bottles of diy co2 on my 75g and I had trouble keeping
it above 10ppm but have since upgraded to compressed co2 and it's always
around 20-25ppm now.

Ron

"WD" wrote in message
news:6xNba.64850$S_4.47168@rwcrnsc53...

"Robert Flory" wrote in message news:1XLba.1088

Try a simple DIY CO2 system, the cost is minimal. Effect is amazing.

Bob

With a 75 gallon, I don't think the DIY yeast method will be sufficient. I
have used DIY on 2 tanks up to 40 gallons with moderate success.