Switched Tank

[josiah1914]

Just switched my tank to a 40 gallon from a 30. I add 10 pounds more of sand. I know the water is going to cloudy from the sand and moving the tank. It’s been a few hours it has settled down a lot but is still pretty cloudy. Is it safe to put fish back in?

 

[Fish Think Pink]

Just switched my tank to a 40 gallon from a 30. I add 10 pounds more of sand. I know the water is going to cloudy from the sand and moving the tank. It’s been a few hours it has settled down a lot but is still pretty cloudy. Is it safe to put fish back in?

probably

had to do similar when I relocated my tank from one house to another

if you don't have airstones in with fish waiting in bins to move into new tank, then sooner is likely better

 

[brandon429]

No. 10% risk of killing them if old sand was moved, redo the sand rinse and instate total cloudlessness

they may make it, for sure. But see this fifty pages as to what to do if you haven’t added them, the sand rinse thread of zero losses:

Official Sand Rinse and Tank Transfer thread

If you are reading this thread to cure a tank invasion from a link I sent you, we do not need to identify your type of invasion here we do not need you to test anything at anytime regarding nitrate, phosphate etc Above all, we do not need to see a microscope slide picture of your invasion at...

www.reef2reef.com

cloudlessness of the new sand and the old is the safest bet. most take the risk. Notice the degree of cyano threads in there we fixed / causatives for cyano outbreaks were non rinsing.

cloudy new sand is due to silt which isn't fish lethal its just an eyesore.

but any old sand cloud mixed in can be lethal, see the first few example threads in our big work thread on tank transfers.

 

[Fish Think Pink]

No. 10% risk of killing them, redo the sand rinse and instate total cloudlessness

they may make it, for sure. But see this fifty pages as to what to do if you haven’t added them, the sand rinse thread of zero losses:

@brandon429 hasn't he missed the boat on 'sand rinse' ? Would think that had to be done before adding sand... but now dealing with after...

Now tank itself is where that sand rinsing... A HOB canister filter might be helpful to reduce cloud faster... or sump socks... perhaps you intend to have attachment above

 

[brandon429]

in that thread we would have him drain and catch current water

and then run that polishing approach above over clean sand, put the cloudy water back. don't have to make new and still completes the rules of safety from above. if fish are not in here even if this is 200 gallons redo it the right way, who wants endless cyano in a new 200 anyway. I bet its not that big to do it right, for the long haul.

drain and catch this water its easy to polish out.

fix your sand, with tap water, as we did for five years there and as recently as two days ago.

indeed most will skip all recommends and proceed, its why we are at page 43 ish going on 100 soon the alternate method always, always seems better initially.

 

[Fish Think Pink]

in that thread we would have him drain and catch current water

and then run that polishing approach above over clean sand, put the cloudy water back. don't have to make new and still completes the rules of safety from above. am used to finding ways to be compliant with the option vs sticking with the loss one, if fish are not in here even if this is 200 gallons redo it the right way, who wants endless cyano in a new 200 anyway. I bet its not that big to do it right, for the long haul.

drain and catch this water its easy to polish out.

fix your sand, with tap water, as we did for five years there and as recently as two days ago.

indeed most will skip all recommends and proceed, its why we are at page 43 ish going on 100 soon the alternate method always, always seems better initially.

thanks for editing above and adding link... reading now