Hello,
First off congrats on this simply stunning and amazing accomplishment. I have some concerns if your tank is 84x24x24, it’s longer than most 210,220, and my 240. I also noticed that you only have one corner over flow. I’m not sure if I’m not seeing the other one, but if you only have one, you will need a pretty good sized return pump. Not to mention you will need a lot more power heads on the side that doesn’t have an overflow to keep your flow going. I’m super proud of you for this huge accomplishment, but I would really plan this before you fill it with water. Larger tanks take some time to actually plan, and like others it’s much more expensive. Another concern is the length of your tank is 84 inches long. This means you will need more lights because you will have shadowing do to the length. There is no way three ai primes can handle an 8 foot tank. You would need min four ai hydra 5200 or 8 hydra 26, or 16 ai primes.
In addition before you fill this with water I wouldn’t use salt water to start out with. I would at least leak test it first, I’d hate for you to lose all that money in salt water. Generally it’s s 1 pound of rock or sand per gallon, which means your water volume displacement will change.
I have no doubt in your motivation and skills, but when I went from a 125 to a 240 it was overwhelming. I had been already in this hobby for 2 years, and it was crazy on how much research I ended up doing. Going from a 50 to a 210 gallons which is what it comes out to be with your numbers, is three times the size.
As you know nothing happens fast in this hobby, I would take your time and really figure out what you want. You don’t want to just fill it with water and hope it works. From your posts it says you want an sps dominant tank. These tanks need extreme amounts of flow. For an example my tank is a 240, I have four current 2100 gph wave makers and two 3100 gph current dc return pumps. I still don’t really have enough flow for a pure sps dominant tank. Your tank is not much smaller than mine gallon size, but it’s 2 feet longer than mine. You will have figure out the best way to achieve your optimal flow.
Please feel free to ask me any questions, and of course any of us. I highly suggest you tap the breaks a tad on this, only because my new tank is barely 7 months old. I planned for almost 7 months lol (yes I was slow I will agree), but even now, I am finding things that well, were not such a great idea. Do you know the history of this tank, since it was used? I would hate for you to accidentally flood your house, like I almost did.
But for the most part lol congrats, truly amazing what you have accomplished. Your parents should be very proud of you
Sincerely
Sarah