Hello,
First congrats on the upgrade and we hope to see pictures. When you do this transfer there are a few things you should do. First definitely scrap and do not use the bio balls, you will have a nitrate nightmare as they will collect waste. If your only running softies it may work but I would not risk it. If your running sps and lps I would never run bio balls on any tank. Now with me stating that, from the research I have done and analyzed that’s my personal opinion. There are sooo many ways to do things now, nothing is really super wrong but I have seen way way more problems using them then then I have with out them.
Second if you move your rock and sand over I highly suggest that you rinse your sand in (fresh new saltwater and also rinse the rock with fresh new salt water). You want the bacteria but not all the other nasties that maybe there. Plus moving the sand the way it is could cause a mini cycle and other problems. You will have to add more sand and live rock etc. So this way it will make your sand look nice and pretty again.
As far as lights go, wow it will always be a debate on what’s good and bad etc. What you must understand is, first this is your tank. Everyone here has great advice on lights but every tank will look and be doffferent even if you run that light. How the tank will look is entirely up to you. In addition realize that just because it’s expensive doesn’t mean it’s better. View lots of lights and know what you want so that your happy and don’t have to do it twice.
Third, I went from a 125 to a 240 and used all the same rock and sand etc. I do not suggest you put your coral or fish in there right away. My tank went through a full cycle and I housed my crittters at my lfs. It is possible but I don’t recommend it, your adding 66% more rock and sand, your 33% can not hold down tank down if the rest cycles.
I would also maybe take a day and set the new one up first, then water test it. After that passes and you have all the rock sand, and water, I’d move your critters or house them elsewhere. This way now you can rinse your rock and sand, and don’t have to rush anything. If you rush this process, it could end very badly which none of us want. If you have more questions by all means ask away.
Sincerely
Sarah