If I place about a) 20 kg b) 30kg c)1 5kg of rocks in my 28 gal tank then how much water do i loose(what will be the capacity of my tank after addition of rock).
2006-10-30 17:28:00 · 4 answers · asked by hhhhhhh 2 in Pets ➔ Fish
The answer above is correct. IT has to do with water displacement. If you chose the porous lava rock you would displace far more water than say using river stones which are more dense.
If you are really concerned you can do a little experiment. Get yourself a five gallon bucket and put your rocks in, but only put about one third in at a time. Fill the bucket and then drain the bucket and see what you have left. It may take a little time but you can get it done.
I know what you are probably concerned about which is amount of water to fish ratio. IF that is the case always be conservative and don't overload your tank with either fish or water plants. Remember that fish grow, they do die, and you may see a fish at the store that you really want, so always leave some vacancies for such occasions.
2006-10-30 18:46:05 · answer #1 · answered by Expat 6 · 1⤊ 0⤋
That depends on the density of the rock eg. lava rock (with many holes and bubbles inside its core, may take up lots of volume but weighs very little whereas a piece of slate of exactly the same weight might not even take up a third of the volume of lava rock. So its all relative to the type of rock you planning on. Take an average piece of the rock you'd like to use and place it in a bucket filled with water. Make sure to measure the amount of water before hand and make a mark on the side of the bucket to show where the water level is before adding the rock. Now (after adding the rock) carefully remove the water that lies above that mark and pour it in a measuring beaker. That is how much water you lose (or is displaced) by adding that rock.
2006-10-31 09:30:15 · answer #2 · answered by moya 4 · 0⤊ 0⤋
take 10 gallons off of your tank.... make a marking on where the water level is.... then add the rocks to the aquarium... now you can calculate how much the water went up and calculate the amount of gallons...
This is what I did... I took out 10gal (for my weekly change)
Made the marking,,,,
From the marking to the top there where 5 inches...... so I figured each gallon was 1/2inch... when I dropped in the rocks the water when up 1-1/2"... which means I added 3 gallons worth of rocks....
get it?....
Try it.. its the easiest way....
2006-10-31 08:28:31 · answer #3 · answered by Ricky 2 · 0⤊ 0⤋
weight isn't the issue. It's the volume of the rocks (how much space it takes up)... thinking back to physics class in grade school... The guy who yells UEREKA after going into the tub of water and the water overflowed.
just stack the rock together and you can guestimate how much volume it is.
oh, the rocks volume with be the volume of water it will displace.
2006-10-31 01:47:33 · answer #4 · answered by professorminh 4 · 0⤊ 0⤋