Help with tricky deadspot

Jcon82 · Aug 23, 2022

Hi All,

Heres a pic of my 40 breeder

This isn't my first tank but its my first reef tank, I spent a lot of time on the scape but never realized I was creating a flow barrier in the middle of the tank! I currently use two Jebao SW-4 pumps and have tried several configurations to get the most even flow. Nothing really works so I'm looking into next steps.

At first I wanted a gyre but I'm not sure that would fix my issue with flow in the middle. So I'm sort of leaning towards adding a 3rd SW-3 right in the middle and having all three blow straight at the front glass and then indirectly back at the rockwork. Does this make sense? What would you do?

Geebs19 · Aug 23, 2022

I have 2 gyres pointing at each other from the sides and I get a lot of flow through the middle. I also only have one return that comes out the center and all 3 hit in the center and create random flow.

Jcon82 · Aug 23, 2022

Geebs19 said:
I have 2 gyres pointing at each other from the sides and I get a lot of flow through the middle. I also only have one return that comes out the center and all 3 hit in the center and create random flow.

yeah, it seemed I would need two forms of gyre flow to collide in the middle to get in there. Thats a bit out of my budget. I was hoping to get away with adding one more $60 pump

Blue Spot Octopus · Aug 23, 2022

I do not care how much flow you put in a tank you will always have a slow spot where things pool up, if not you are in a waterfall.

For your tank I would put a pump on the back wall to help with your dead spot.

Jcon82 · Aug 23, 2022

Blue Spot Octopus said:
I do not care how much flow you put in a tank you will always have a slow spot where things pool up, if not you are in a waterfall.

For your tank I would put a pump on the back wall to help with your dead spot.

I have two pumps currently on the back wall blowing forward , slightly toed in towards the middle, on random at max power. I thought placing a third and turning them all down to 75% would work out.