Online Tool For Calculating The Weight Of A Full Tank?

[karigupi]

I'm sure I have seen one somewhere but I cannot find it anywhere now.

I have a desk/sideboard I would like to use for the new tank in the lounge, but I want to make sure it is strong enough to take the weight. The tank is 3ft approx 160ltrs plus gravel, plants etc.

 

[JustKia]

Water (at room temp) weighs approx 1kg per litre.
Thus your 160L is going to weight ~160kg plus the weight of the tank itself.
Of course any substrate (sand, gravel, etc) will displace water but also probably weigh more than water too.

 

[saltynay]

180kg would be good guess at total weight after substrate ect... I would aim for 200-250kg load bearing table.

 

[karigupi]

180kg would be good guess at total weight after substrate ect... I would aim for 200-250kg load bearing table.

Thank you both very much, I will have to find some very heavy stuff to try it out now! Thats about 36ish stones worth of people, thats me, hubby, all three kids & a bit more, blimey.

 

[Truck]

the mass of something is always the same, it is not influxed by temp.

but i would see it as:

160kg of water
20kg substrate
30kg tank
20 kg cabinet

so that is 230kg

 

[mixmaster jay]

it tells you on that calculator at the top right of the page fresh water weight and salt water weight how much live rock is needed and all that kind of thing

 

[saltynay]

the mass of something is always the same, it is not influxed by temp.
but i would see it as:
160kg of water
20kg substrate
30kg tank
20 kg cabinet
so that is 230kg

Not true water is at its densest at 277 kelvin or 4C when its 999.9720 as opposed to when at 353K or 80C its 971.8 so you can't just throw temp out of the equation not to mentioned dissolved ionic compounds and the relative desnity of the rock type used. "50kg should be your aim weight and leave it on the table for 2-3 days then see if any bowing at all has happened.

 

[JustKia]

Your both right LOL
For the size tank and the fact it's (sub?) tropical? then the difference in mass of water that would be affected by temp is negliable in this instance. However I noted it as being at around room temp because if I didn't some bright spark would point out that water isn't exactly 1kg per litre and so on.
To be pedantic the volume occupied by the water is what will change not it's molecular mass, but it really isn't going to impact here, so we can use 1 litre of water = 1kg as a rough guide to work out how much a tank is going to weigh.

 

[saltynay]

Molecular mass is a theoretical value which is why I don't particularly like it as its relative to something so therefore not 100% reliable, thats why I use kelvin as celcius is to do with water in its liquid state but that isn't very accurate as a litre of water won't suddenly eveporate once a pan reaches 100C. You can use Molecular mass to find weight but it would be a really long winded way as you would need to use avogadros number aswell and then get into a massive muddle.

The densities relative to the temps in the aquarium hobby are
Temps in celcius Density
+30 995.6502
+25 997.0479
+22 997.7735
+20 998.2071
+15 999.1026
+10 999.7026

So 1 litre of water at 30C is 995grams when at 15C its 999g

I realise I am being pedantic when dealing with such small qauntities but just want to make sure we only give 100% airtight information

 

[Truck]

the mass of something is ALWAYS the same, the weight changes

weight is actually measured in newtons and mass in kilos

 

[mixmaster jay]

its all true but does it really matter that much aslong as you have a rough guide of it and the fact that 99.9% of aquariums are indoors resulting in a room temp or near as damit anyway unless its marine and being chilled and thats not cold either lol

im not trying to upset people or cause arguements i dont think its that important being a milligram or 2 out or whatever it might be

 

[saltynay]

I thought you got it mixed up with weight as many do. Why would you be talking about an inertial measurement for a stationary object?

It doesn't matter we are just having a nice discussion

 

[Truck]

marine and tropical are at the same temp give or take a few degrees.

 

[mixmaster jay]

yeah i know truck thats what im trying to say (i think) lol

who has there tank at 4`c anyway ? or im i being thick again lol

 

[aaronnorth]

ah, but what about density... only joking lol. No need to have this thread anymore confusing.
But yes, generally (99.9% of cases lol) 1L = 1Kg