jumpfrog
Active Member
We always talk about the number of gallons in our tanks so I got to thinking, just how much water is really in there?
Here's my train of though........any comments?
Start with my 125 predrilled. Taking the true measurements and calculating volume you're down to 123.4 gallons.
Given there are overflows the water is already about an inch down from the top measurement, now I'm down to 117.8 gallons (not smart enough to figure out how much volume is lost in the overflows themselves so for this exercise I'll just ignore the loss)
I have a 3" sand bed so now I'm down 101 gallons.
When I do a 16 gallon water change my water level drops 4 inches.
So 22" height minus 1" for overflows height minus 3" for sand leaves me 18 inches. If 16 gallons equals 4" of water that each inch would equal 4 gallons.
My 18" of tank room now drops me to 72 gallons.
My beautiful 125 now only holds 72 gallons :scared:
Here's my train of though........any comments?
Start with my 125 predrilled. Taking the true measurements and calculating volume you're down to 123.4 gallons.
Given there are overflows the water is already about an inch down from the top measurement, now I'm down to 117.8 gallons (not smart enough to figure out how much volume is lost in the overflows themselves so for this exercise I'll just ignore the loss)
I have a 3" sand bed so now I'm down 101 gallons.
When I do a 16 gallon water change my water level drops 4 inches.
So 22" height minus 1" for overflows height minus 3" for sand leaves me 18 inches. If 16 gallons equals 4" of water that each inch would equal 4 gallons.
My 18" of tank room now drops me to 72 gallons.
My beautiful 125 now only holds 72 gallons :scared: