Flame didn't make it... Need new fish suggestions.

[Samw]

I think the '1" of fish per 5 gals' rule is outdated just like the 'X watts per gallon' rule for light.

Inch is a linear 1 dimensional measurement and volume of water and size of fish are not 1 dimensional objects.

For example, let's assume a fish has a shape of a box. Let's say a fish of a certain species has a height of .5" and width of .5" and length of 1" inch. That fish would be .25 cubic inches.

Well, let's say another older fish of the same species is 2" long. Keeping the same proportions, its height would be 1", and its width would be 1". Then this fish would be 2 cubic inches. That means the fish is 8 times bigger.

So now, given that we have 2 fish of equal proportion, the rules states that the 2" long fish only needs twice the volume of water even though it is 8x bigger??? Expand that to a 3" or 4" of fish and you'll see how this rule lost me (IE. A 4" fish is 64 times bigger than a 1" fish but the rule says that the 4" fish only needs 4 times more water volume than the 1" fish).

[Skimmerking]

pin point that one pretty good I was never a fan of the measure stage for a salt water tank.

Originally Posted by Samw

I think the '1" of fish per 5 gals' rule is outdated just like the 'X watts per gallon' rule for light.

Inch is a linear 1 dimensional measurement and volume of water and size of fish are not 1 dimensional objects.

For example, let's assume a fish has a shape of a box. Let's say a fish of a certain species has a height of .5" and width of .5" and length of 1" inch. That fish would be .25 cubic inches.

Well, let's say another older fish of the same species is 2" long. Keeping the same proportions, its height would be 1", and its width would be 1". Then this fish would be 2 cubic inches. That means the fish is 8 times bigger.

So now, given that we have 2 fish of equal proportion, the rules states that the 2" long fish only needs twice the volume of water even though it is 8x bigger??? Expand that to a 3" or 4" of fish and you'll see how this rule lost me.

[Murminator]

Yeah I am not on the inch/gallon rule, what if it is a 20G tank with 50 pounds of rock there is no swimming room or vice versa 20G with 2 pounds of rock. What about coral bioload? that also has to account for something.