need diff. explain tube overflow box vs. cpr overflow box

[Doug1]

Originally Posted by ionracing

ok the outter box has a baffle in the middle but i cant fit the inner box int he back sump of my aquapod

OK with the inner box, water drains down till the Utube sucks air, when the power comes back on it pumps everything in the sump return section into the tank, THE siphon broke so the overflow DON'T work probably overfilling the tank

[Fat Tony]

can it be modified to fit?

[nobody]

but the same thing would happen if you used the skimmer box in the tank.

[Fat Tony]

pics please... i need to see what the deal is with the overflow box is on the tank.. you really need to use the inner box unless the overflow on the aquapod is totally sealed off from the main tank are and if the power failed the u tube woould stay submerged and not be able to loose the siphon... if it looses siphon you will end up with a flood...