new setup of 610 gallon tank post move.

  • We are currently upgrading MFK. thanks! -neo
Remove the last baffle and make the return chamber larger like I suggested earlier. That pump will empty that return before the water can make it back to the pump.
 
Pump power has no bearing on the water level in the last chamber. The amount of water in the entire system does. This is also why the overflow drain should be located in the return pump chamber Simply add more water and the water level in the last chamber will increase no matter how powerful the pump is. Also, you can run the return chamber that low but it is more desirable to have it close to the level the rest of the sump is at. The water will be highly turbulent at that lower level and the pump may be sucking bubbles which could cause cavitation reducing pump life and efficiency.
 
Hi 450moto, Im not following your logic and had some comments. Please elaborate more. Thanks.


Pump power has no bearing on the water level in the last chamber. The amount of water in the entire system does.

If the return pumps greater than the volume draining to the sump, then the chamber will be lower amd could eventually dry out.


This is also why the overflow drain should be located in the return pump chamber Simply add more water and the water level in the last chamber will increase no matter how powerful the pump is.

This isnt necessarily the case. When the drain volume equals to the return the level will be constant. Only evaporation will then change the water level on the last return chamber.

Also, you can run the return chamber that low but it is more desirable to have it close to the level the rest of the sump is atThe water will be highly turbulent at that lower

This is possible but OP's level is fine IMO. I run my level lower and have no issues with turbalance.


level and the pump may be sucking bubbles which could cause cavitation reducing pump life and efficiency.
 
DN328 DN328 that is correct but I am assuming the drains from the tank have adequate capacity which is the case here. For example say a 2000 gph pump is being used and it is switched out for a 4000 gph pump (assuming the drains can handle the extra flow) the water level will increase in the tank and behind the baffles resulting in a lower water level in the return chamber. The solution is to just add water to account for the extra water being stored elsewhere.
 
Pump power has no bearing on the water level in the last chamber. The amount of water in the entire system does. This is also why the overflow drain should be located in the return pump chamber Simply add more water and the water level in the last chamber will increase no matter how powerful the pump is. Also, you can run the return chamber that low but it is more desirable to have it close to the level the rest of the sump is at. The water will be highly turbulent at that lower level and the pump may be sucking bubbles which could cause cavitation reducing pump life and efficiency.


So at the water level in the picture there was a massive amount of bubbles coming out of the return line. We actually really liked the look almost like a air certain. We put more water in the sump while adjusting the overflows trying to quieten them. The bubbles went away. Am I understanding your post correctly that this could damage the pump if so we will keep the water level higher
 
I have noted several posted recommending removing the last baffle the main concern for that is that the bottom of the baffle before it is 3 inchs off the bottom of the tank. would the ceramic stones that escape the egg create not be pulled toward the pump and possibly get sucked to the screen covering the pump inlet restricting flow. Draining the sump and doing anything that would require downtime for the sump is not an option.
 
I'm still not seeing why that would be neccessary. Your pump doesn't warrant any need to do that.

But if you feel you need to you could place the bio-media in mesh bags. Easier to maintain and cleaner set up too.
 
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I'm still not seeing why that would be neccessary. Your pump doesn't warrant any need to do that.

But if you feel you need to you could place the bio-media in mesh bags. Easier to maintain and cleaner set up too.
Thanks. I would prefer to leave the baffle, so I will continue with the current setup unless it becomes apparent that it is causing issues
 
A amber1986 no need to remove the baffle. Yes bubbles are bad for pumps as it will cause cavitation and lower pump efficiency.
 
If cavitation is the issue. Then how wouldn't making the return return larger solve that? A Razor could be used to remove the baffle without shutting down the entire system. If the sump has a overflow then just adding water would do nothing without raising that as well, and the water will still leave the system on power failure, and on restart the pump would still be consuming the water until the drip catches back up.
 
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