| | Re: How many bags of Amazonia for a 60-P tank?
Assuming your ADA 60-P (17.4g) has these dimensions of 24'' long, 12'' long, and 14'' tall, and you want a minimum of 2 inches deep here is the maths:
Volume of space substrate will take up:
24" long x 12" wide x 2 inches deep = 576 cubic inches
Cubic inches to metric:
576 cubic inches = 9438.9 cubic cm
Volume in cm to liters of liquid water:
1 cubic cm = 1 mL and there are 1000 mL in 1 liter, so
9.4389 Liters of substrate needed for 2 inches, or if you round, 9.4 liters.
If you want 2.5 inches you need 11.8 liters, round up to 12 liters.
So either a 9 L bag of substrate or a 9L and a 3 L will get you all set.
Hope this helps.