Question about transfering tank

Tomorrow I will be taking everything out of my 29g bowfront and putting it all in my 40g breeder. I have the tanks side by side so some of it's going to be easy. I will be draining my 29g about half way. Then I will set up my rockwork, then adding 40 new pounds of live sand. The question I have is should I go ahead and add the water from my 29g then the new saltwater or should I add the new saltwater then the water from my 29g.
Or if there are any other suggestion, then please let me hear them. Thanks

 

how old is ur sandbed cuz if its not TOO old i'd use my sand too I used re-used live sand in my reef in the move and it worked great...even dodged a long cycle... (1 week for 265G)

 

When I do it I add new water first then fill up if needed with the old. Just make sure the parameters are very close.

 

I moved a 14g biocube full reef to a 29g biocube reef and they are right beside eachother.

I added the rock first, acclimated the corals and fish and the next day i did a 10g water change.

There is no way to really avoid a lil nitrate spike in the new tank with transfering rock and stuff.

I would add the water from the 29g and then add new saltwater but i dont really think it matters that whole much.

 

I would use new water that was correct, and drip acclimate.

 

I've had the sand since oct. I have decided to go ahead and change it. I shouldn't have a cycle. The LFS that I buy everything from only sales fully cured liverock. It is a great store. Small, but a lot to choose from, been opened for 20 years and he only deals with saltwater aquariums, nothing else. I will use a small amount of the old sand to help seed the new sand

 

I have no corals or anemone in the tank. just a few fish, a , cc starfisg, a spinny tip urchin and a few snails

 

Okay, i dont think there should be a huge problem. Before adding the fish, inverts and whatever else you have..Test the water in tank once its filled up with water. I would drip them so it wont have a huge amount of stress on the fish and stuff.

Another thing, when you add the sand, its bound to make a sandstorm and cloud up the water.

 

I plan to put a plate down on top of the sand and pour the water on the plate. It helps keep the cloudiness down

 

OOOO alright i gotchya! i thought you were adding the sand after you put in the water..My bad..

I would say you should be okay then.