28 total (7 gal sump, 21 gal display)
i would agree with one thing, maturity of the tank is important as well.
my tank was in full cycle with no shortcuts.
keep in mind my system is 20g, which means its less bc of the 20lbs sand and 8lbs of live rock in my tank. i don't know what the displacement on that is, but you can probably consider the tanks total volume to be less than 20g.
I cycled with just a bottle of Dr. Tims. This is however the first time I am experimenting with Marine Pure for bacteria surface area. I did a lot of research on the block and people use it as a sub for Live Rock. It's so that I can have a minimalist look in the DT.
I went about 4 weeks with just a block of Marine Pure and Bottle of Dr. Tims.
Then When I cut the block up, I added about 20lb FIJI PINK (Wet Version) and 8lbs of cured Live Rock and let that cycle for another 4 weeks.
I started running the Remora S the same time I added the rock and sand. This pulled out whatever gunk I was expecting from adding these things since prior to that my tank was just clean water.
I had zero blooms in diatoms because I let the tank cycle with no lights.
It's been about 3 weeks since I've added my BTA and fish, ive had 3 clowns die, but I suspect a bad batch or a sick batch since my Brother in Law bought from the same LFS and the same batch and his wasn't eating either.
I have a cheap captive bred $15 ocelleris that is doing great.
I went through the troubles of telling you all this, bc despite what everyone says I am successful in keeping one. You can PM me for a status in a few months and hopefully I can tell you a good story.
Temperature is kept at 78.7 but will increase throughout the day to 80 because of my t5 bulbs.