tchashow said:10 net pots. hey diablo, where'd u get that formula for volume. if it is correct your math is wrong. you have written V = pi*h/3(R²+r²+Rr) and Rr means R x r and it's not 61 it would be 35. i think you added together the totals of R^2 and r^2. but thanx 4 the help everybody. i think im just gonna buy the 50 liter bag as it is cheaper than buying 2 bags of 10 liter hydroton.
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