drilled tank no overflow

[riche]

O I have seen in the past tanks that are drilled in the back and they use a flush style strainer that goes into the bulkhead, if using this how would you keep the tank silet and the water level to where it wont go below the trim ( for viewing purposes)

 

[Winschuc]

you could always put a valve on the drain line and dial it back to match the flow entering the tank. This will let you control the water level in the tank, but it will also increase the possibility of the tank overflowing if there is a clog and no emergency overflow.

 

[ReeferBob]

These are very poor designs. One of the benefits of the traditional overflow (with the teeth) is the surface skimming effect. SW tanks develop a lot of crud on the top and this is very useful in keeping the top filtered. The flooding, as you mentioned, is another detractor from the strainer style. The tank will drain down to that strainer level.

 

[KJAG]

Slotted weirs( teeth) can at times cut your surface skimming in half. A smooth weir is superior but it's a little trickier to come up with methods to keep fish from taking a ride over the lip. But of course, better than nothing/ a strainer overflow.

Gotta have an emergency overflow dude. It's a must. You're begging for a flood otherwise. At least try to get a Herbie on there.