How do you adjust the weir?

[Reefrookie733]

when i installed my tank i made sure it was 100% level. I was having a problem with the water test on one side and now i know its because the left side weir is slightly higher than the right side. Therefore i get more flow on the right side (dual overflows). How do you adjust the slots in the weir to be equal with the other side? any recommendations, maybe cutting into the weir a bit to allow for same side flow??
thanks

 

[Albertan22]

You could use a dremel tool to deepen the notches on one side, just be careful not to overdo it or you will just move the problem to the other side of the tank.

 

[Albertan22]

Do you have enough flow in the tank? The weirs should be close enough that it shouldn’t matter. Also if your Powerheads are pushing flow harder to one side of the tank it will push more water into that overflow. It’s something that has become really noticeable for me with my new 6 foot tank. An MP40 at full throttle can raise the water level on the far side while dropping it on the side it’s mounted to.

 

[Reefrookie733]

You could use a dremel tool to deepen the notches on one side, just be careful not to overdo it or you will just move the problem to the other side of the tank.

Good point. I will try this tomorrow, gradually of course. Lol

 

[Reefrookie733]

Do you have enough flow in the tank? The weirs should be close enough that it shouldn’t matter. Also if your Powerheads are pushing flow harder to one side of the tank it will push more water into that overflow. It’s something that has become really noticeable for me with my new 6 foot tank. An MP40 at full throttle can raise the water level on the far side while dropping it on the side it’s mounted to.

Right now I just cycling with the return pump only, but I will have a Tunze 6105 at each end of my 200G DT.