Herbie overflow question

[TheAquarian]

I’m running a Herbie on my 75 gallon tank with a 20 gallon aga excuse for a sump with about 15 gallons in it. My return pump is a Jeabo DC 5500 running at about 75% this gives me 38 times turnover is this too much to turnover to use the sump as a refugeium? Can I put a true union ball valve on the return line to reduce the flow through the sump or would this cause a back pressure problem with the dc pump?

Also I notice the water level in the overflow drops at the same rate as the water level in the sump due to evaporated water. Is this normal for the Herbie system?

 

[PmCarbrey]

Why would you put a ball valve on the return instead of just turning the pump down?

 

[clk51212]

Way to much flow sump flow should be 4 to 5 Times tank volume. I would dial your return down I’m running a reefer 350 85gallons total volume with around 450 thru the sump

 

[cracker]

Another opposing opinion. I prefer "lots" of turn over thru out the entire system. Is this flow creating micro bubbles or such? I wouldn't think You don't need a valve if the flow rate is already controlled at the pump itself .

 

[TheAquarian]

Why would you put a ball valve on the return instead of just turning the pump down?

Thinking of adding a T fitting and a fluidized filter, turning the pump down would reduce the flow everywhere. Also with the drain almost completely closed the overflow drains too fast.

 

[TheAquarian]

Another opposing opinion. I prefer "lots" of turn over thru out the entire system. Is this flow creating micro bubbles or such? I wouldn't think You don't need a valve if the flow rate is already controlled at the pump itself .

It is controlled currently, no micro bubbles. I’m thinking of adding a fluidized filter and if I reduce the flow with the pump there may not be enough pressure in the filter to keep the Mideast tumbling. Isn’t too much flow through a fuge pointless for nutrient export?

 

[Mark Gray]

I have a 55 right now with a fuge I have a Trigger 39 I have a sicce 7 rated at 1900 an hour wide open it is maybe doing a 1000 an hour SPS love it the zoos take about a month but then they are ok and growing to. I also have a gyre for more flow I think you are fine

 

[cracker]

In a closed system like our tanks it doesn't matter. ( A lot of water gets filtered a little ) or
( a little water gets filtered a lot) in a closed system it's all the same.
At least that's how I see it

 

[PmCarbrey]

I'd agree on you not having to worry about flow, I run a vectra m1 at 100% on a 60 gallon with no issues, I've never seen flow through a sump as something that needs to be restricted