I would like anyone's help on how to choose the right equipment for a 55 gallon reef aquarium.

First of all I will give the dimensions of the tank

Tank Length = 48 inches

Tank Width = 16 inches

Tank Height = 17 inches

There will be a 30-40 gallon sump/refugium along with the main tank, so I should add this water volume when I'll be calculating water circulation, heaters, chillers, etc?

1) What should be the glass thickness and should the bottom glass be tempered glass? What difference will a tempered glass make?

2) Given that the tank holds 55 gallons and sump another 30 gallos with just water inside, then how much live rock and substrate should I use? The rock will replace water so the water volume will decrease. How do I calculate the rock/substrate volume, to find the final water volume.

3) How do I calculate the flow from the tank to the sump? Is there a formula, that based on the overflow holes I can calculate the volume of the water that flows to the sump, so I can match that flow with a pump?

5) There must be water circulation in the tank which is achieved with pumps and/or powerheads. What is the ratio of tank volume to powerhead volume that I should have in mind.

Do I use the tank volume without live rock, with live rock(less) or with live rock and the sump volume(more) to calculate this?

6) Heaters. What is the ratio of Watt and tank volume. Again as above, what water volume should I be comparing?

7) Lighting:

If I use this PC fixture, what corals,anemones etc. could I keep given the depth of the tank is around 16-17 inches.

I don't plan to keep any clams.

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