Cylinder Tank Plumbing

Exotic Aquaria · Apr 22, 2018

I ha r two other reef tanks but this is my first cylinder tank. There are two 1in holes, one 1/2 in hole and one 3/4 hole. I'm figuring the 1in holes are for the return but I can't figure out what the others are for. One I'm guessing would be the drain but what would the other be?

MarsRover · Apr 22, 2018

Might be for a circulating pump? Where’d you get this thing? Maybe ask the person who made it? Looks like the two smaller holes were supposed to be the same size??

Exotic Aquaria · Apr 29, 2018

So I have decided that I'm going to use the two 1in holes for my return and combine the 3/4 and 1/2 holes for the supply to the filter. The previous owner was using the 1in holes for the supply to the filter the 3/4 for the return and the 1/2 for the bubbler. What are your thoughts. Remember this is 250gal. Any plumbing suggestions? I'm open to also drilling new holes if needed.

don_chuwish · Apr 29, 2018

Bigger holes for drains to sump, smaller for returns to tank. Is it going to have a big center column or something?

Exotic Aquaria · Apr 29, 2018

don_chuwish said:
Bigger holes for drains to sump, smaller for returns to tank. Is it going to have a big center column or something?

I haven't decided on if it's going to have a center column or not. I was thinking of keeping a small shark and would need to keep the outer perimeter clear to allow it to freely swim. If I didn't get the shark then I was thinking of stacking the rock against the back wall.