Odd w/c question

[Michiba54]

It is a 55 gallon, I normaly change 15g then fill it back up... However I have 2-3 day old fry in there now and I dont want the water slashing down from the filters to blast them all around the tank.

 

[Burtess]

It is a 55 gallon, I normaly change 15g then fill it back up... However I have 2-3 day old fry in there now and I dont want the water slashing down from the filters to blast them all around the tank.

First 5gal water change would take out 5 gal old water.

Second 5 gal water change would take out 4.5455gal old water and 0.4545gal new water from last change.

Net old water changed would be 9.5455gal.

Burt

P.S. Of course this assumes that the tank actually holds 55 gal of water, which really is not the case, it would be less.

 

[vr6fan]

i must be missing something here..why would you take 5 out, put 5 in then take 5 out again? Just take out what you need to all at once then add your fresh water

 

[Michiba54]

i must be missing something here..why would you take 5 out, put 5 in then take 5 out again? Just take out what you need to all at once then add your fresh water

It is a 55 gallon, I normaly change 15g then fill it back up... However I have 2-3 day old fry in there now and I dont want the water slashing down from the filters to blast them all around the tank.

 

[packer43064]

Turn filters off then. Do 15g,refill and turn filters back on. Really this is pretty simple.

 

[Columbian Shark Catfish]

I don't think you could technically figure it as 7.5 gallons without first knowing the size of the tank the water would be dispersed into.

Well I was thinking that if he needed to add 5 gallons back to the tank, it would be around 10 gallons because two 5 gallons would mean an empty tank.

 

[DMasker]

Turn filters off then. Do 15g,refill and turn filters back on. Really this is pretty simple.

Second this. I do that just because I don't feel like getting soaked by splashing water by my FX5 when I change my water.