Hello & welcome just ask away

Oh your gonna need a bigger tank, welcome to mts (multiple tank syndrome)

On my tank set up with a sump tank, the way i have it set up, was to first drill a drain hole on the side of the tank to acomodate 2" normal pipe used in everyday plumbing, which then runs down a 3Ft trickle tower into the sump tank which has an ocean runner 3500 to return the water to the main tank, i also had a problem with the water returning to quick, to which i then spliced my ehim tubing (the green 0ne) and put a flow controle tap in, which solved the problem for me, i have some pictures somewhere of my system that i could dig out if you are interested

I would also say that they are now settled in your tank as well as the darker backgrounds also in the lfs fish will not show true colours, due to a much more stressful time in the shops tanks

Amen to that, mind you is that not how we learn?