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So... theres two ways to look at this and I can attest for both sides of this since my tanks follow it both ways..
My Lagoon does not have the same amount of lbs of rock per gallon, but the added media helps with surface area for beneficial bacteria. I also have filter floss and other methods of filtration to help keep the tank clean..
Now.... My macroalgae project is minimal filtration so this rule was KEY, and actually I went above and beyond the amount of lbs for gallon. Pretty sure I have approx. 10-12 in a 4 Gallon tank!
My Lagoon does not have the same amount of lbs of rock per gallon, but the added media helps with surface area for beneficial bacteria. I also have filter floss and other methods of filtration to help keep the tank clean..
Now.... My macroalgae project is minimal filtration so this rule was KEY, and actually I went above and beyond the amount of lbs for gallon. Pretty sure I have approx. 10-12 in a 4 Gallon tank!